CVE-2025-38203 (GCVE-0-2025-38203)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2026-05-11 21:23
VLAI
Title
jfs: Fix null-ptr-deref in jfs_ioc_trim
Summary
In the Linux kernel, the following vulnerability has been resolved: jfs: Fix null-ptr-deref in jfs_ioc_trim [ Syzkaller Report ] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000087: 0000 [#1 KASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f] CPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted 6.13.0-rc6-gfbfd64d25c7a-dirty #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Sched_ext: serialise (enabled+all), task: runnable_at=-30ms RIP: 0010:jfs_ioc_trim+0x34b/0x8f0 Code: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93 90 82 fe ff 4c 89 ff 31 f6 RSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206 RAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000 R10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438 FS: 00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? __die_body+0x61/0xb0 ? die_addr+0xb1/0xe0 ? exc_general_protection+0x333/0x510 ? asm_exc_general_protection+0x26/0x30 ? jfs_ioc_trim+0x34b/0x8f0 jfs_ioctl+0x3c8/0x4f0 ? __pfx_jfs_ioctl+0x10/0x10 ? __pfx_jfs_ioctl+0x10/0x10 __se_sys_ioctl+0x269/0x350 ? __pfx___se_sys_ioctl+0x10/0x10 ? do_syscall_64+0xfb/0x210 do_syscall_64+0xee/0x210 ? syscall_exit_to_user_mode+0x1e0/0x330 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe51f4903ad Code: c3 e8 a7 2b 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d RSP: 002b:00007fe5202250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe51f5cbf80 RCX: 00007fe51f4903ad RDX: 0000000020000680 RSI: 00000000c0185879 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe520225640 R13: 000000000000000e R14: 00007fe51f44fca0 R15: 00007fe52021d000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_ioc_trim+0x34b/0x8f0 Code: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93 90 82 fe ff 4c 89 ff 31 f6 RSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206 RAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000 R10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438 FS: 00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Kernel panic - not syncing: Fatal exception [ Analysis ] We believe that we have found a concurrency bug in the `fs/jfs` module that results in a null pointer dereference. There is a closely related issue which has been fixed: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234 ... but, unfortunately, the accepted patch appears to still be susceptible to a null pointer dereference under some interleavings. To trigger the bug, we think that `JFS_SBI(ipbmap->i_sb)->bmap` is set to NULL in `dbFreeBits` and then dereferenced in `jfs_ioc_trim`. This bug manifests quite rarely under normal circumstances, but is triggereable from a syz-program.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 0d50231d473f89024158dc62624930de45d13718 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < a9d41c925069c950e18160e12a7e10e0f58c56fb (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 4a8cb9908b51500a76f5156423bd295df53bff89 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 9806ae34d7d661c372247cd36f83bfa0523d60ed (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < a4685408ff6c3e2af366ad9a7274f45ff3f394ee (git)
Create a notification for this product.
Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 5.4.295 , ≤ 5.4.* (semver)
Unaffected: 5.10.239 , ≤ 5.10.* (semver)
Unaffected: 5.15.186 , ≤ 5.15.* (semver)
Unaffected: 6.15.4 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "dateUpdated": "2025-11-03T17:35:25.733Z",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix null-ptr-deref in jfs_ioc_trim\n\n[ Syzkaller Report ]\n\nOops: general protection fault, probably for non-canonical address\n0xdffffc0000000087: 0000 [#1\nKASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f]\nCPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted\n6.13.0-rc6-gfbfd64d25c7a-dirty #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nSched_ext: serialise (enabled+all), task: runnable_at=-30ms\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\n90 82 fe ff 4c 89 ff 31 f6\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\n? __die_body+0x61/0xb0\n? die_addr+0xb1/0xe0\n? exc_general_protection+0x333/0x510\n? asm_exc_general_protection+0x26/0x30\n? jfs_ioc_trim+0x34b/0x8f0\njfs_ioctl+0x3c8/0x4f0\n? __pfx_jfs_ioctl+0x10/0x10\n? __pfx_jfs_ioctl+0x10/0x10\n__se_sys_ioctl+0x269/0x350\n? __pfx___se_sys_ioctl+0x10/0x10\n? do_syscall_64+0xfb/0x210\ndo_syscall_64+0xee/0x210\n? syscall_exit_to_user_mode+0x1e0/0x330\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fe51f4903ad\nCode: c3 e8 a7 2b 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48\n89 f7 48 89 d6 48 89 ca 4d\nRSP: 002b:00007fe5202250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007fe51f5cbf80 RCX: 00007fe51f4903ad\nRDX: 0000000020000680 RSI: 00000000c0185879 RDI: 0000000000000005\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fe520225640\nR13: 000000000000000e R14: 00007fe51f44fca0 R15: 00007fe52021d000\n\u003c/TASK\u003e\nModules linked in:\n---[ end trace 0000000000000000 ]---\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\n90 82 fe ff 4c 89 ff 31 f6\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nKernel panic - not syncing: Fatal exception\n\n[ Analysis ]\n\nWe believe that we have found a concurrency bug in the `fs/jfs` module\nthat results in a null pointer dereference. There is a closely related\nissue which has been fixed:\n\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234\n\n... but, unfortunately, the accepted patch appears to still be\nsusceptible to a null pointer dereference under some interleavings.\n\nTo trigger the bug, we think that `JFS_SBI(ipbmap-\u003ei_sb)-\u003ebmap` is set\nto NULL in `dbFreeBits` and then dereferenced in `jfs_ioc_trim`. This\nbug manifests quite rarely under normal circumstances, but is\ntriggereable from a syz-program."
        }
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        "dateUpdated": "2026-05-11T21:23:14.900Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0d50231d473f89024158dc62624930de45d13718"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9d41c925069c950e18160e12a7e10e0f58c56fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a8cb9908b51500a76f5156423bd295df53bff89"
        },
        {
          "url": "https://git.kernel.org/stable/c/9806ae34d7d661c372247cd36f83bfa0523d60ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4685408ff6c3e2af366ad9a7274f45ff3f394ee"
        }
      ],
      "title": "jfs: Fix null-ptr-deref in jfs_ioc_trim",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38203",
    "datePublished": "2025-07-04T13:37:23.975Z",
    "dateReserved": "2025-04-16T04:51:23.994Z",
    "dateUpdated": "2026-05-11T21:23:14.900Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-38203",
      "date": "2026-07-20",
      "epss": "0.00147",
      "percentile": "0.0437"
    },
    "microsoft_vex": {
      "current_release_date": "2025-09-03T22:07:31.000Z",
      "cve": "CVE-2025-38203",
      "id": "msrc_CVE-2025-38203",
      "initial_release_date": "2025-07-02T00:00:00.000Z",
      "product_status:known_not_affected": "1",
      "product_status:under_investigation": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "jfs: Fix null-ptr-deref in jfs_ioc_trim",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-38203.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38203\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:28.247\",\"lastModified\":\"2026-06-17T09:16:22.897\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\njfs: Fix null-ptr-deref in jfs_ioc_trim\\n\\n[ Syzkaller Report ]\\n\\nOops: general protection fault, probably for non-canonical address\\n0xdffffc0000000087: 0000 [#1\\nKASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f]\\nCPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted\\n6.13.0-rc6-gfbfd64d25c7a-dirty #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nSched_ext: serialise (enabled+all), task: runnable_at=-30ms\\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\\n90 82 fe ff 4c 89 ff 31 f6\\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cTASK\u003e\\n? __die_body+0x61/0xb0\\n? die_addr+0xb1/0xe0\\n? exc_general_protection+0x333/0x510\\n? asm_exc_general_protection+0x26/0x30\\n? jfs_ioc_trim+0x34b/0x8f0\\njfs_ioctl+0x3c8/0x4f0\\n? __pfx_jfs_ioctl+0x10/0x10\\n? __pfx_jfs_ioctl+0x10/0x10\\n__se_sys_ioctl+0x269/0x350\\n? __pfx___se_sys_ioctl+0x10/0x10\\n? do_syscall_64+0xfb/0x210\\ndo_syscall_64+0xee/0x210\\n? syscall_exit_to_user_mode+0x1e0/0x330\\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7fe51f4903ad\\nCode: c3 e8 a7 2b 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48\\n89 f7 48 89 d6 48 89 ca 4d\\nRSP: 002b:00007fe5202250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\\nRAX: ffffffffffffffda RBX: 00007fe51f5cbf80 RCX: 00007fe51f4903ad\\nRDX: 0000000020000680 RSI: 00000000c0185879 RDI: 0000000000000005\\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fe520225640\\nR13: 000000000000000e R14: 00007fe51f44fca0 R15: 00007fe52021d000\\n\u003c/TASK\u003e\\nModules linked in:\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:jfs_ioc_trim+0x34b/0x8f0\\nCode: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93\\n90 82 fe ff 4c 89 ff 31 f6\\nRSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206\\nRAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a\\nRDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001\\nRBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000\\nR10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000\\nR13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438\\nFS:  00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nKernel panic - not syncing: Fatal exception\\n\\n[ Analysis ]\\n\\nWe believe that we have found a concurrency bug in the `fs/jfs` module\\nthat results in a null pointer dereference. There is a closely related\\nissue which has been fixed:\\n\\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234\\n\\n... but, unfortunately, the accepted patch appears to still be\\nsusceptible to a null pointer dereference under some interleavings.\\n\\nTo trigger the bug, we think that `JFS_SBI(ipbmap-\u003ei_sb)-\u003ebmap` is set\\nto NULL in `dbFreeBits` and then dereferenced in `jfs_ioc_trim`. This\\nbug manifests quite rarely under normal circumstances, but is\\ntriggereable from a syz-program.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jfs: Fix null-ptr-deref in jfs_ioc_trim [Informe de Syzkaller] Oops: fallo de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0xdffffc0000000087: 0000 [#1 KASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f] CPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted 6.13.0-rc6-gfbfd64d25c7a-dirty #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Sched_ext: serialise (enabled+all), task: runnable_at=-30ms RIP: 0010:jfs_ioc_trim+0x34b/0x8f0 Code: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93 90 82 fe ff 4c 89 ff 31 f6 RSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206 RAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000 R10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438 FS: 00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace:  ? __die_body+0x61/0xb0 ? die_addr+0xb1/0xe0 ? exc_general_protection+0x333/0x510 ? asm_exc_general_protection+0x26/0x30 ? jfs_ioc_trim+0x34b/0x8f0 jfs_ioctl+0x3c8/0x4f0 ? __pfx_jfs_ioctl+0x10/0x10 ? __pfx_jfs_ioctl+0x10/0x10 __se_sys_ioctl+0x269/0x350 ? __pfx___se_sys_ioctl+0x10/0x10 ? do_syscall_64+0xfb/0x210 do_syscall_64+0xee/0x210 ? syscall_exit_to_user_mode+0x1e0/0x330 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe51f4903ad Code: c3 e8 a7 2b 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d RSP: 002b:00007fe5202250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe51f5cbf80 RCX: 00007fe51f4903ad RDX: 0000000020000680 RSI: 00000000c0185879 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe520225640 R13: 000000000000000e R14: 00007fe51f44fca0 R15: 00007fe52021d000  Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jfs_ioc_trim+0x34b/0x8f0 Code: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93 90 82 fe ff 4c 89 ff 31 f6 RSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206 RAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000 R10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000438 FS: 00007fe520225640(0000) GS:ffff8880b7e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005593c91b2c88 CR3: 000000014927c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Kernel panic - not syncing: Fatal exception [ Analysis ] Creemos que hemos encontrado un error de concurrencia en el m\u00f3dulo `fs/jfs` que da como resultado una desreferencia de puntero nulo. Existe un problema estrechamente relacionado que ya se ha corregido: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234... pero, lamentablemente, el parche aceptado parece seguir siendo susceptible a una desreferencia de puntero nulo en algunas intercalaciones. Creemos que para desencadenar el error, `JFS_SBI(ipbmap-\u0026gt;i_sb)-\u0026gt;bmap` se establece en NULL en `dbFreeBits` y luego se desreferencia en `jfs_ioc_trim`. Este error es poco frecuente en circunstancias normales, pero se puede desencadenar desde un programa syz.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/jfs/jfs_discard.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b40c2e665cd552eae5fbdbb878bc29a34357668e\",\"lessThan\":\"0d50231d473f89024158dc62624930de45d13718\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b40c2e665cd552eae5fbdbb878bc29a34357668e\",\"lessThan\":\"a9d41c925069c950e18160e12a7e10e0f58c56fb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b40c2e665cd552eae5fbdbb878bc29a34357668e\",\"lessThan\":\"4a8cb9908b51500a76f5156423bd295df53bff89\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b40c2e665cd552eae5fbdbb878bc29a34357668e\",\"lessThan\":\"9806ae34d7d661c372247cd36f83bfa0523d60ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b40c2e665cd552eae5fbdbb878bc29a34357668e\",\"lessThan\":\"a4685408ff6c3e2af366ad9a7274f45ff3f394ee\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/jfs/jfs_discard.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.295\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.239\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.186\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.4\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.7\",\"versionEndExcluding\":\"5.4.295\",\"matchCriteriaId\":\"787938FE-68C1-4295-BECA-110746C6BED4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.239\",\"matchCriteriaId\":\"C3D14F4C-A21E-465D-A928-5CCE684E2B98\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.186\",\"matchCriteriaId\":\"D96F2C0D-0D4A-4658-AD34-D8A626EA422D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.15.4\",\"matchCriteriaId\":\"CF41C6A0-D0C0-49DF-8756-8E9A19FCC39A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d50231d473f89024158dc62624930de45d13718\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a8cb9908b51500a76f5156423bd295df53bff89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9806ae34d7d661c372247cd36f83bfa0523d60ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a4685408ff6c3e2af366ad9a7274f45ff3f394ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a9d41c925069c950e18160e12a7e10e0f58c56fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:22:08+00:00",
      "cve": "CVE-2025-38203",
      "id": "CVE-2025-38203",
      "initial_release_date": "2025-07-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: jfs: Fix null-ptr-deref in jfs_ioc_trim",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38203.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T06:12:52Z",
      "cve": "CVE-2025-38203",
      "id": "CVE-2025-38203",
      "initial_release_date": "2025-07-07T23:24:01Z",
      "product_status:known_affected": "635",
      "product_status:known_not_affected": "80",
      "product_status:recommended": "354",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38203",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38203.json",
      "version": "24"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.