CVE-2022-50652 (GCVE-0-2022-50652)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2026-05-23 15:24
VLAI
Title
uio: uio_dmem_genirq: Fix missing unlock in irq configuration
Summary
In the Linux kernel, the following vulnerability has been resolved: uio: uio_dmem_genirq: Fix missing unlock in irq configuration Commit b74351287d4b ("uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()") started calling disable_irq() without holding the spinlock because it can sleep. However, that fix introduced another bug: if interrupt is already disabled and a new disable request comes in, then the spinlock is not unlocked: root@localhost:~# printf '\x00\x00\x00\x00' > /dev/uio0 root@localhost:~# printf '\x00\x00\x00\x00' > /dev/uio0 root@localhost:~# [ 14.851538] BUG: scheduling while atomic: bash/223/0x00000002 [ 14.851991] Modules linked in: uio_dmem_genirq uio myfpga(OE) bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper drm snd_pcm ppdev joydev psmouse snd_timer snd e1000fb_sys_fops syscopyarea parport sysfillrect soundcore sysimgblt input_leds pcspkr i2c_piix4 serio_raw floppy evbug qemu_fw_cfg mac_hid pata_acpi ip_tables x_tables autofs4 [last unloaded: parport_pc] [ 14.854206] CPU: 0 PID: 223 Comm: bash Tainted: G OE 6.0.0-rc7 #21 [ 14.854786] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 [ 14.855664] Call Trace: [ 14.855861] <TASK> [ 14.856025] dump_stack_lvl+0x4d/0x67 [ 14.856325] dump_stack+0x14/0x1a [ 14.856583] __schedule_bug.cold+0x4b/0x5c [ 14.856915] __schedule+0xe81/0x13d0 [ 14.857199] ? idr_find+0x13/0x20 [ 14.857456] ? get_work_pool+0x2d/0x50 [ 14.857756] ? __flush_work+0x233/0x280 [ 14.858068] ? __schedule+0xa95/0x13d0 [ 14.858307] ? idr_find+0x13/0x20 [ 14.858519] ? get_work_pool+0x2d/0x50 [ 14.858798] schedule+0x6c/0x100 [ 14.859009] schedule_hrtimeout_range_clock+0xff/0x110 [ 14.859335] ? tty_write_room+0x1f/0x30 [ 14.859598] ? n_tty_poll+0x1ec/0x220 [ 14.859830] ? tty_ldisc_deref+0x1a/0x20 [ 14.860090] schedule_hrtimeout_range+0x17/0x20 [ 14.860373] do_select+0x596/0x840 [ 14.860627] ? __kernel_text_address+0x16/0x50 [ 14.860954] ? poll_freewait+0xb0/0xb0 [ 14.861235] ? poll_freewait+0xb0/0xb0 [ 14.861517] ? rpm_resume+0x49d/0x780 [ 14.861798] ? common_interrupt+0x59/0xa0 [ 14.862127] ? asm_common_interrupt+0x2b/0x40 [ 14.862511] ? __uart_start.isra.0+0x61/0x70 [ 14.862902] ? __check_object_size+0x61/0x280 [ 14.863255] core_sys_select+0x1c6/0x400 [ 14.863575] ? vfs_write+0x1c9/0x3d0 [ 14.863853] ? vfs_write+0x1c9/0x3d0 [ 14.864121] ? _copy_from_user+0x45/0x70 [ 14.864526] do_pselect.constprop.0+0xb3/0xf0 [ 14.864893] ? do_syscall_64+0x6d/0x90 [ 14.865228] ? do_syscall_64+0x6d/0x90 [ 14.865556] __x64_sys_pselect6+0x76/0xa0 [ 14.865906] do_syscall_64+0x60/0x90 [ 14.866214] ? syscall_exit_to_user_mode+0x2a/0x50 [ 14.866640] ? do_syscall_64+0x6d/0x90 [ 14.866972] ? do_syscall_64+0x6d/0x90 [ 14.867286] ? do_syscall_64+0x6d/0x90 [ 14.867626] entry_SYSCALL_64_after_hwframe+0x63/0xcd [...] stripped [ 14.872959] </TASK> ('myfpga' is a simple 'uio_dmem_genirq' driver I wrote to test this) The implementation of "uio_dmem_genirq" was based on "uio_pdrv_genirq" and it is used in a similar manner to the "uio_pdrv_genirq" driver with respect to interrupt configuration and handling. At the time "uio_dmem_genirq" was introduced, both had the same implementation of the 'uio_info' handlers irqcontrol() and handler(). Then commit 34cb27528398 ("UIO: Fix concurrency issue"), which was only applied to "uio_pdrv_genirq", ended up making them a little different. That commit, among other things, changed disable_irq() to disable_irq_nosync() in the implementation of irqcontrol(). The motivation there was to avoid a deadlock between irqcontrol() and handler(), since it added a spinlock in the irq handler, and disable_irq() waits for the completion of the irq handler. By changing disable_irq() to disable_irq_nosync() in irqcontrol(), we also avoid the sleeping-whil ---truncated---
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b77fa964ecb1d72a671234f5bea95b41f77c233a , < 9977cb7af5a8f4738198b020436e2e56c5cd721e (git)
Affected: 0151b03f43f2d295a6949454434074b34a262e06 , < a323d24a0183be730d2398b11b3a91e5c2e222a0 (git)
Affected: ea6b7b1d58790ffb36bace723f6e62a1c8595c77 , < ac5585bb06a2e82177269bee93e59887ce591106 (git)
Affected: 750a95d63746458e86c6d92dfad48a05c64d0ecd , < eca77a25a7cb3201738f4b55b9b8fa1089d7d002 (git)
Affected: b74351287d4bd90636c3f48bc188c2f53824c2d4 , < 9bf7a0b2b15cd12e15f7858072bd89933746de67 (git)
Affected: b74351287d4bd90636c3f48bc188c2f53824c2d4 , < 79a4bdb6b9920134af1a4738a1fa36a0438cd905 (git)
Affected: b74351287d4bd90636c3f48bc188c2f53824c2d4 , < 030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d (git)
Affected: b74351287d4bd90636c3f48bc188c2f53824c2d4 , < ee180e867ce4b2f744799247b81050b3e5dd62cd (git)
Affected: b74351287d4bd90636c3f48bc188c2f53824c2d4 , < 9de255c461d1b3f0242b3ad1450c3323a3e00b34 (git)
Affected: 4a117a1c581623d04bf09aa7455d8e7b66e8bb85 (git)
Affected: 1d52cd8b52876145b0f6344be95fc750e30d9ecb (git)
Affected: 4.9.215 , < 4.9.337 (semver)
Affected: 4.14.172 , < 4.14.303 (semver)
Affected: 4.19.106 , < 4.19.270 (semver)
Affected: 5.4.22 , < 5.4.229 (semver)
Affected: 4.4.215 , < 4.5 (semver)
Affected: 5.5.6 , < 5.6 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/uio/uio_dmem_genirq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9977cb7af5a8f4738198b020436e2e56c5cd721e",
              "status": "affected",
              "version": "b77fa964ecb1d72a671234f5bea95b41f77c233a",
              "versionType": "git"
            },
            {
              "lessThan": "a323d24a0183be730d2398b11b3a91e5c2e222a0",
              "status": "affected",
              "version": "0151b03f43f2d295a6949454434074b34a262e06",
              "versionType": "git"
            },
            {
              "lessThan": "ac5585bb06a2e82177269bee93e59887ce591106",
              "status": "affected",
              "version": "ea6b7b1d58790ffb36bace723f6e62a1c8595c77",
              "versionType": "git"
            },
            {
              "lessThan": "eca77a25a7cb3201738f4b55b9b8fa1089d7d002",
              "status": "affected",
              "version": "750a95d63746458e86c6d92dfad48a05c64d0ecd",
              "versionType": "git"
            },
            {
              "lessThan": "9bf7a0b2b15cd12e15f7858072bd89933746de67",
              "status": "affected",
              "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
              "versionType": "git"
            },
            {
              "lessThan": "79a4bdb6b9920134af1a4738a1fa36a0438cd905",
              "status": "affected",
              "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
              "versionType": "git"
            },
            {
              "lessThan": "030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d",
              "status": "affected",
              "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
              "versionType": "git"
            },
            {
              "lessThan": "ee180e867ce4b2f744799247b81050b3e5dd62cd",
              "status": "affected",
              "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
              "versionType": "git"
            },
            {
              "lessThan": "9de255c461d1b3f0242b3ad1450c3323a3e00b34",
              "status": "affected",
              "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a117a1c581623d04bf09aa7455d8e7b66e8bb85",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1d52cd8b52876145b0f6344be95fc750e30d9ecb",
              "versionType": "git"
            },
            {
              "lessThan": "4.9.337",
              "status": "affected",
              "version": "4.9.215",
              "versionType": "semver"
            },
            {
              "lessThan": "4.14.303",
              "status": "affected",
              "version": "4.14.172",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19.270",
              "status": "affected",
              "version": "4.19.106",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.229",
              "status": "affected",
              "version": "5.4.22",
              "versionType": "semver"
            },
            {
              "lessThan": "4.5",
              "status": "affected",
              "version": "4.4.215",
              "versionType": "semver"
            },
            {
              "lessThan": "5.6",
              "status": "affected",
              "version": "5.5.6",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/uio/uio_dmem_genirq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "versionStartIncluding": "4.9.215",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "4.14.172",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "versionStartIncluding": "4.19.106",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "5.4.22",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.215",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.5.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuio: uio_dmem_genirq: Fix missing unlock in irq configuration\n\nCommit b74351287d4b (\"uio: fix a sleep-in-atomic-context bug in\nuio_dmem_genirq_irqcontrol()\") started calling disable_irq() without\nholding the spinlock because it can sleep. However, that fix introduced\nanother bug: if interrupt is already disabled and a new disable request\ncomes in, then the spinlock is not unlocked:\n\nroot@localhost:~# printf \u0027\\x00\\x00\\x00\\x00\u0027 \u003e /dev/uio0\nroot@localhost:~# printf \u0027\\x00\\x00\\x00\\x00\u0027 \u003e /dev/uio0\nroot@localhost:~# [   14.851538] BUG: scheduling while atomic: bash/223/0x00000002\n[   14.851991] Modules linked in: uio_dmem_genirq uio myfpga(OE) bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper drm snd_pcm ppdev joydev psmouse snd_timer snd e1000fb_sys_fops syscopyarea parport sysfillrect soundcore sysimgblt input_leds pcspkr i2c_piix4 serio_raw floppy evbug qemu_fw_cfg mac_hid pata_acpi ip_tables x_tables autofs4 [last unloaded: parport_pc]\n[   14.854206] CPU: 0 PID: 223 Comm: bash Tainted: G           OE      6.0.0-rc7 #21\n[   14.854786] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n[   14.855664] Call Trace:\n[   14.855861]  \u003cTASK\u003e\n[   14.856025]  dump_stack_lvl+0x4d/0x67\n[   14.856325]  dump_stack+0x14/0x1a\n[   14.856583]  __schedule_bug.cold+0x4b/0x5c\n[   14.856915]  __schedule+0xe81/0x13d0\n[   14.857199]  ? idr_find+0x13/0x20\n[   14.857456]  ? get_work_pool+0x2d/0x50\n[   14.857756]  ? __flush_work+0x233/0x280\n[   14.858068]  ? __schedule+0xa95/0x13d0\n[   14.858307]  ? idr_find+0x13/0x20\n[   14.858519]  ? get_work_pool+0x2d/0x50\n[   14.858798]  schedule+0x6c/0x100\n[   14.859009]  schedule_hrtimeout_range_clock+0xff/0x110\n[   14.859335]  ? tty_write_room+0x1f/0x30\n[   14.859598]  ? n_tty_poll+0x1ec/0x220\n[   14.859830]  ? tty_ldisc_deref+0x1a/0x20\n[   14.860090]  schedule_hrtimeout_range+0x17/0x20\n[   14.860373]  do_select+0x596/0x840\n[   14.860627]  ? __kernel_text_address+0x16/0x50\n[   14.860954]  ? poll_freewait+0xb0/0xb0\n[   14.861235]  ? poll_freewait+0xb0/0xb0\n[   14.861517]  ? rpm_resume+0x49d/0x780\n[   14.861798]  ? common_interrupt+0x59/0xa0\n[   14.862127]  ? asm_common_interrupt+0x2b/0x40\n[   14.862511]  ? __uart_start.isra.0+0x61/0x70\n[   14.862902]  ? __check_object_size+0x61/0x280\n[   14.863255]  core_sys_select+0x1c6/0x400\n[   14.863575]  ? vfs_write+0x1c9/0x3d0\n[   14.863853]  ? vfs_write+0x1c9/0x3d0\n[   14.864121]  ? _copy_from_user+0x45/0x70\n[   14.864526]  do_pselect.constprop.0+0xb3/0xf0\n[   14.864893]  ? do_syscall_64+0x6d/0x90\n[   14.865228]  ? do_syscall_64+0x6d/0x90\n[   14.865556]  __x64_sys_pselect6+0x76/0xa0\n[   14.865906]  do_syscall_64+0x60/0x90\n[   14.866214]  ? syscall_exit_to_user_mode+0x2a/0x50\n[   14.866640]  ? do_syscall_64+0x6d/0x90\n[   14.866972]  ? do_syscall_64+0x6d/0x90\n[   14.867286]  ? do_syscall_64+0x6d/0x90\n[   14.867626]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[...] stripped\n[   14.872959]  \u003c/TASK\u003e\n\n(\u0027myfpga\u0027 is a simple \u0027uio_dmem_genirq\u0027 driver I wrote to test this)\n\nThe implementation of \"uio_dmem_genirq\" was based on \"uio_pdrv_genirq\" and\nit is used in a similar manner to the \"uio_pdrv_genirq\" driver with respect\nto interrupt configuration and handling. At the time \"uio_dmem_genirq\" was\nintroduced, both had the same implementation of the \u0027uio_info\u0027 handlers\nirqcontrol() and handler(). Then commit 34cb27528398 (\"UIO: Fix concurrency\nissue\"), which was only applied to \"uio_pdrv_genirq\", ended up making them\na little different. That commit, among other things, changed disable_irq()\nto disable_irq_nosync() in the implementation of irqcontrol(). The\nmotivation there was to avoid a deadlock between irqcontrol() and\nhandler(), since it added a spinlock in the irq handler, and disable_irq()\nwaits for the completion of the irq handler.\n\nBy changing disable_irq() to disable_irq_nosync() in irqcontrol(), we also\navoid the sleeping-whil\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:24:49.933Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9977cb7af5a8f4738198b020436e2e56c5cd721e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a323d24a0183be730d2398b11b3a91e5c2e222a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac5585bb06a2e82177269bee93e59887ce591106"
        },
        {
          "url": "https://git.kernel.org/stable/c/eca77a25a7cb3201738f4b55b9b8fa1089d7d002"
        },
        {
          "url": "https://git.kernel.org/stable/c/9bf7a0b2b15cd12e15f7858072bd89933746de67"
        },
        {
          "url": "https://git.kernel.org/stable/c/79a4bdb6b9920134af1a4738a1fa36a0438cd905"
        },
        {
          "url": "https://git.kernel.org/stable/c/030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee180e867ce4b2f744799247b81050b3e5dd62cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/9de255c461d1b3f0242b3ad1450c3323a3e00b34"
        }
      ],
      "title": "uio: uio_dmem_genirq: Fix missing unlock in irq configuration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50652",
    "datePublished": "2025-12-09T00:00:26.593Z",
    "dateReserved": "2025-12-08T23:57:43.371Z",
    "dateUpdated": "2026-05-23T15:24:49.933Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50652",
      "date": "2026-11-07",
      "epss": "0.00232",
      "percentile": "0.1413"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/uio/uio_dmem_genirq.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "9977cb7af5a8f4738198b020436e2e56c5cd721e",
                    "status": "affected",
                    "version": "b77fa964ecb1d72a671234f5bea95b41f77c233a",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a323d24a0183be730d2398b11b3a91e5c2e222a0",
                    "status": "affected",
                    "version": "0151b03f43f2d295a6949454434074b34a262e06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ac5585bb06a2e82177269bee93e59887ce591106",
                    "status": "affected",
                    "version": "ea6b7b1d58790ffb36bace723f6e62a1c8595c77",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "eca77a25a7cb3201738f4b55b9b8fa1089d7d002",
                    "status": "affected",
                    "version": "750a95d63746458e86c6d92dfad48a05c64d0ecd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9bf7a0b2b15cd12e15f7858072bd89933746de67",
                    "status": "affected",
                    "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "79a4bdb6b9920134af1a4738a1fa36a0438cd905",
                    "status": "affected",
                    "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d",
                    "status": "affected",
                    "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ee180e867ce4b2f744799247b81050b3e5dd62cd",
                    "status": "affected",
                    "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9de255c461d1b3f0242b3ad1450c3323a3e00b34",
                    "status": "affected",
                    "version": "b74351287d4bd90636c3f48bc188c2f53824c2d4",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "4a117a1c581623d04bf09aa7455d8e7b66e8bb85",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "1d52cd8b52876145b0f6344be95fc750e30d9ecb",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4.9.337",
                    "status": "affected",
                    "version": "4.9.215",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "4.14.303",
                    "status": "affected",
                    "version": "4.14.172",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "4.19.270",
                    "status": "affected",
                    "version": "4.19.106",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.4.229",
                    "status": "affected",
                    "version": "5.4.22",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "4.5",
                    "status": "affected",
                    "version": "4.4.215",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.6",
                    "status": "affected",
                    "version": "5.5.6",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/uio/uio_dmem_genirq.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.6"
                  },
                  {
                    "lessThan": "5.6",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.9.*",
                    "status": "unaffected",
                    "version": "4.9.337",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.303",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.270",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.229",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.163",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.86",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.16",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.2",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuio: uio_dmem_genirq: Fix missing unlock in irq configuration\n\nCommit b74351287d4b (\"uio: fix a sleep-in-atomic-context bug in\nuio_dmem_genirq_irqcontrol()\") started calling disable_irq() without\nholding the spinlock because it can sleep. However, that fix introduced\nanother bug: if interrupt is already disabled and a new disable request\ncomes in, then the spinlock is not unlocked:\n\nroot@localhost:~# printf \u0027\\x00\\x00\\x00\\x00\u0027 \u003e /dev/uio0\nroot@localhost:~# printf \u0027\\x00\\x00\\x00\\x00\u0027 \u003e /dev/uio0\nroot@localhost:~# [   14.851538] BUG: scheduling while atomic: bash/223/0x00000002\n[   14.851991] Modules linked in: uio_dmem_genirq uio myfpga(OE) bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper drm snd_pcm ppdev joydev psmouse snd_timer snd e1000fb_sys_fops syscopyarea parport sysfillrect soundcore sysimgblt input_leds pcspkr i2c_piix4 serio_raw floppy evbug qemu_fw_cfg mac_hid pata_acpi ip_tables x_tables autofs4 [last unloaded: parport_pc]\n[   14.854206] CPU: 0 PID: 223 Comm: bash Tainted: G           OE      6.0.0-rc7 #21\n[   14.854786] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n[   14.855664] Call Trace:\n[   14.855861]  \u003cTASK\u003e\n[   14.856025]  dump_stack_lvl+0x4d/0x67\n[   14.856325]  dump_stack+0x14/0x1a\n[   14.856583]  __schedule_bug.cold+0x4b/0x5c\n[   14.856915]  __schedule+0xe81/0x13d0\n[   14.857199]  ? idr_find+0x13/0x20\n[   14.857456]  ? get_work_pool+0x2d/0x50\n[   14.857756]  ? __flush_work+0x233/0x280\n[   14.858068]  ? __schedule+0xa95/0x13d0\n[   14.858307]  ? idr_find+0x13/0x20\n[   14.858519]  ? get_work_pool+0x2d/0x50\n[   14.858798]  schedule+0x6c/0x100\n[   14.859009]  schedule_hrtimeout_range_clock+0xff/0x110\n[   14.859335]  ? tty_write_room+0x1f/0x30\n[   14.859598]  ? n_tty_poll+0x1ec/0x220\n[   14.859830]  ? tty_ldisc_deref+0x1a/0x20\n[   14.860090]  schedule_hrtimeout_range+0x17/0x20\n[   14.860373]  do_select+0x596/0x840\n[   14.860627]  ? __kernel_text_address+0x16/0x50\n[   14.860954]  ? poll_freewait+0xb0/0xb0\n[   14.861235]  ? poll_freewait+0xb0/0xb0\n[   14.861517]  ? rpm_resume+0x49d/0x780\n[   14.861798]  ? common_interrupt+0x59/0xa0\n[   14.862127]  ? asm_common_interrupt+0x2b/0x40\n[   14.862511]  ? __uart_start.isra.0+0x61/0x70\n[   14.862902]  ? __check_object_size+0x61/0x280\n[   14.863255]  core_sys_select+0x1c6/0x400\n[   14.863575]  ? vfs_write+0x1c9/0x3d0\n[   14.863853]  ? vfs_write+0x1c9/0x3d0\n[   14.864121]  ? _copy_from_user+0x45/0x70\n[   14.864526]  do_pselect.constprop.0+0xb3/0xf0\n[   14.864893]  ? do_syscall_64+0x6d/0x90\n[   14.865228]  ? do_syscall_64+0x6d/0x90\n[   14.865556]  __x64_sys_pselect6+0x76/0xa0\n[   14.865906]  do_syscall_64+0x60/0x90\n[   14.866214]  ? syscall_exit_to_user_mode+0x2a/0x50\n[   14.866640]  ? do_syscall_64+0x6d/0x90\n[   14.866972]  ? do_syscall_64+0x6d/0x90\n[   14.867286]  ? do_syscall_64+0x6d/0x90\n[   14.867626]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[...] stripped\n[   14.872959]  \u003c/TASK\u003e\n\n(\u0027myfpga\u0027 is a simple \u0027uio_dmem_genirq\u0027 driver I wrote to test this)\n\nThe implementation of \"uio_dmem_genirq\" was based on \"uio_pdrv_genirq\" and\nit is used in a similar manner to the \"uio_pdrv_genirq\" driver with respect\nto interrupt configuration and handling. At the time \"uio_dmem_genirq\" was\nintroduced, both had the same implementation of the \u0027uio_info\u0027 handlers\nirqcontrol() and handler(). Then commit 34cb27528398 (\"UIO: Fix concurrency\nissue\"), which was only applied to \"uio_pdrv_genirq\", ended up making them\na little different. That commit, among other things, changed disable_irq()\nto disable_irq_nosync() in the implementation of irqcontrol(). The\nmotivation there was to avoid a deadlock between irqcontrol() and\nhandler(), since it added a spinlock in the irq handler, and disable_irq()\nwaits for the completion of the irq handler.\n\nBy changing disable_irq() to disable_irq_nosync() in irqcontrol(), we also\navoid the sleeping-whil\n---truncated---"
          }
        ],
        "id": "CVE-2022-50652",
        "lastModified": "2026-06-17T05:23:56.183",
        "metrics": {},
        "published": "2025-12-09T01:16:48.063",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/79a4bdb6b9920134af1a4738a1fa36a0438cd905"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9977cb7af5a8f4738198b020436e2e56c5cd721e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9bf7a0b2b15cd12e15f7858072bd89933746de67"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9de255c461d1b3f0242b3ad1450c3323a3e00b34"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a323d24a0183be730d2398b11b3a91e5c2e222a0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ac5585bb06a2e82177269bee93e59887ce591106"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/eca77a25a7cb3201738f4b55b9b8fa1089d7d002"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ee180e867ce4b2f744799247b81050b3e5dd62cd"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-11-07T11:25:38+00:00",
      "cve": "CVE-2022-50652",
      "id": "CVE-2022-50652",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: uio: uio_dmem_genirq: Fix missing unlock in irq configuration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50652.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-11-01T17:55:38Z",
      "cve": "CVE-2022-50652",
      "id": "CVE-2022-50652",
      "initial_release_date": "2025-12-10T00:38:51Z",
      "product_status:known_affected": "421",
      "product_status:known_not_affected": "317",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50652",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-50652.json",
      "version": "25"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.