CVE-2023-53326 (GCVE-0-2023-53326)

Vulnerability from cvelistv5 – Published: 2025-09-16 16:12 – Updated: 2026-01-14 18:32
VLAI?
Title
powerpc: Don't try to copy PPR for task with NULL pt_regs
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc: Don't try to copy PPR for task with NULL pt_regs powerpc sets up PF_KTHREAD and PF_IO_WORKER with a NULL pt_regs, which from my (arguably very short) checking is not commonly done for other archs. This is fine, except when PF_IO_WORKER's have been created and the task does something that causes a coredump to be generated. Then we get this crash: Kernel attempted to read user page (160) - exploit attempt? (uid: 1000) BUG: Kernel NULL pointer dereference on read at 0x00000160 Faulting instruction address: 0xc0000000000c3a60 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=32 NUMA pSeries Modules linked in: bochs drm_vram_helper drm_kms_helper xts binfmt_misc ecb ctr syscopyarea sysfillrect cbc sysimgblt drm_ttm_helper aes_generic ttm sg libaes evdev joydev virtio_balloon vmx_crypto gf128mul drm dm_mod fuse loop configfs drm_panel_orientation_quirks ip_tables x_tables autofs4 hid_generic usbhid hid xhci_pci xhci_hcd usbcore usb_common sd_mod CPU: 1 PID: 1982 Comm: ppc-crash Not tainted 6.3.0-rc2+ #88 Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries NIP: c0000000000c3a60 LR: c000000000039944 CTR: c0000000000398e0 REGS: c0000000041833b0 TRAP: 0300 Not tainted (6.3.0-rc2+) MSR: 800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 88082828 XER: 200400f8 ... NIP memcpy_power7+0x200/0x7d0 LR ppr_get+0x64/0xb0 Call Trace: ppr_get+0x40/0xb0 (unreliable) __regset_get+0x180/0x1f0 regset_get_alloc+0x64/0x90 elf_core_dump+0xb98/0x1b60 do_coredump+0x1c34/0x24a0 get_signal+0x71c/0x1410 do_notify_resume+0x140/0x6f0 interrupt_exit_user_prepare_main+0x29c/0x320 interrupt_exit_user_prepare+0x6c/0xa0 interrupt_return_srr_user+0x8/0x138 Because ppr_get() is trying to copy from a PF_IO_WORKER with a NULL pt_regs. Check for a valid pt_regs in both ppc_get/ppr_set, and return an error if not set. The actual error value doesn't seem to be important here, so just pick -EINVAL. [mpe: Trim oops in change log, add Fixes & Cc stable]
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fa439810cc1b3c927ec24ede17d02467e1b143a1 , < 80a4200d51e5a7e046f4a90f5faa5bafd5a60c58 (git)
Affected: fa439810cc1b3c927ec24ede17d02467e1b143a1 , < 7624973bc15b76d000e8e6f9b8080fcb76d36595 (git)
Affected: fa439810cc1b3c927ec24ede17d02467e1b143a1 , < 064a1c7b0f8403260d77627e62424a72ca26cee2 (git)
Affected: fa439810cc1b3c927ec24ede17d02467e1b143a1 , < 01849382373b867ddcbe7536b9dfa89f3bcea60e (git)
Affected: fa439810cc1b3c927ec24ede17d02467e1b143a1 , < fd7276189450110ed835eb0a334e62d2f1c4e3be (git)
Create a notification for this product.
    Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.10.177 , ≤ 5.10.* (semver)
Unaffected: 5.15.106 , ≤ 5.15.* (semver)
Unaffected: 6.1.23 , ≤ 6.1.* (semver)
Unaffected: 6.2.10 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc: Don\u0027t try to copy PPR for task with NULL pt_regs\n\npowerpc sets up PF_KTHREAD and PF_IO_WORKER with a NULL pt_regs, which\nfrom my (arguably very short) checking is not commonly done for other\narchs. This is fine, except when PF_IO_WORKER\u0027s have been created and\nthe task does something that causes a coredump to be generated. Then we\nget this crash:\n\n  Kernel attempted to read user page (160) - exploit attempt? (uid: 1000)\n  BUG: Kernel NULL pointer dereference on read at 0x00000160\n  Faulting instruction address: 0xc0000000000c3a60\n  Oops: Kernel access of bad area, sig: 11 [#1]\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=32 NUMA pSeries\n  Modules linked in: bochs drm_vram_helper drm_kms_helper xts binfmt_misc ecb ctr syscopyarea sysfillrect cbc sysimgblt drm_ttm_helper aes_generic ttm sg libaes evdev joydev virtio_balloon vmx_crypto gf128mul drm dm_mod fuse loop configfs drm_panel_orientation_quirks ip_tables x_tables autofs4 hid_generic usbhid hid xhci_pci xhci_hcd usbcore usb_common sd_mod\n  CPU: 1 PID: 1982 Comm: ppc-crash Not tainted 6.3.0-rc2+ #88\n  Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries\n  NIP:  c0000000000c3a60 LR: c000000000039944 CTR: c0000000000398e0\n  REGS: c0000000041833b0 TRAP: 0300   Not tainted  (6.3.0-rc2+)\n  MSR:  800000000280b033 \u003cSF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE\u003e  CR: 88082828  XER: 200400f8\n  ...\n  NIP memcpy_power7+0x200/0x7d0\n  LR  ppr_get+0x64/0xb0\n  Call Trace:\n    ppr_get+0x40/0xb0 (unreliable)\n    __regset_get+0x180/0x1f0\n    regset_get_alloc+0x64/0x90\n    elf_core_dump+0xb98/0x1b60\n    do_coredump+0x1c34/0x24a0\n    get_signal+0x71c/0x1410\n    do_notify_resume+0x140/0x6f0\n    interrupt_exit_user_prepare_main+0x29c/0x320\n    interrupt_exit_user_prepare+0x6c/0xa0\n    interrupt_return_srr_user+0x8/0x138\n\nBecause ppr_get() is trying to copy from a PF_IO_WORKER with a NULL\npt_regs.\n\nCheck for a valid pt_regs in both ppc_get/ppr_set, and return an error\nif not set. The actual error value doesn\u0027t seem to be important here, so\njust pick -EINVAL.\n\n[mpe: Trim oops in change log, add Fixes \u0026 Cc stable]"
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(uid: 1000)\\n  BUG: Kernel NULL pointer dereference on read at 0x00000160\\n  Faulting instruction address: 0xc0000000000c3a60\\n  Oops: Kernel access of bad area, sig: 11 [#1]\\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=32 NUMA pSeries\\n  Modules linked in: bochs drm_vram_helper drm_kms_helper xts binfmt_misc ecb ctr syscopyarea sysfillrect cbc sysimgblt drm_ttm_helper aes_generic ttm sg libaes evdev joydev virtio_balloon vmx_crypto gf128mul drm dm_mod fuse loop configfs drm_panel_orientation_quirks ip_tables x_tables autofs4 hid_generic usbhid hid xhci_pci xhci_hcd usbcore usb_common sd_mod\\n  CPU: 1 PID: 1982 Comm: ppc-crash Not tainted 6.3.0-rc2+ #88\\n  Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries\\n  NIP:  c0000000000c3a60 LR: c000000000039944 CTR: c0000000000398e0\\n  REGS: c0000000041833b0 TRAP: 0300   Not tainted  (6.3.0-rc2+)\\n  MSR:  800000000280b033 \u003cSF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE\u003e  CR: 88082828  XER: 200400f8\\n  ...\\n  NIP memcpy_power7+0x200/0x7d0\\n  LR  ppr_get+0x64/0xb0\\n  Call Trace:\\n    ppr_get+0x40/0xb0 (unreliable)\\n    __regset_get+0x180/0x1f0\\n    regset_get_alloc+0x64/0x90\\n    elf_core_dump+0xb98/0x1b60\\n    do_coredump+0x1c34/0x24a0\\n    get_signal+0x71c/0x1410\\n    do_notify_resume+0x140/0x6f0\\n    interrupt_exit_user_prepare_main+0x29c/0x320\\n    interrupt_exit_user_prepare+0x6c/0xa0\\n    interrupt_return_srr_user+0x8/0x138\\n\\nBecause ppr_get() is trying to copy from a PF_IO_WORKER with a NULL\\npt_regs.\\n\\nCheck for a valid pt_regs in both ppc_get/ppr_set, and return an error\\nif not set. The actual error value doesn\u0027t seem to be important here, so\\njust pick -EINVAL.\\n\\n[mpe: Trim oops in change log, add Fixes \u0026 Cc stable]\"}],\"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},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.8\",\"versionEndExcluding\":\"5.10.177\",\"matchCriteriaId\":\"3C65C175-23F1-432B-8A1A-73DD494A27AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.106\",\"matchCriteriaId\":\"46A62903-B927-42D9-88F8-7F39EC9BC23B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.23\",\"matchCriteriaId\":\"C6396026-EF6B-4933-AF27-B3AFE6E5506D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.2.10\",\"matchCriteriaId\":\"5178A008-E2D6-4093-BCD4-8A80523EE39E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8E3B0E8-FA27-4305-87BB-AF6C25B160CB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"A47F0FC3-CE52-4BA1-BA51-22F783938431\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3583026A-27EC-4A4C-850A-83F2AF970673\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"DC271202-7570-4505-89A4-D602D47BFD00\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01849382373b867ddcbe7536b9dfa89f3bcea60e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/064a1c7b0f8403260d77627e62424a72ca26cee2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7624973bc15b76d000e8e6f9b8080fcb76d36595\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/80a4200d51e5a7e046f4a90f5faa5bafd5a60c58\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fd7276189450110ed835eb0a334e62d2f1c4e3be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53326\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:28:49.760555Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:28:45.638Z\"}}], \"cna\": {\"title\": \"powerpc: Don\u0027t try to copy PPR for task with NULL pt_regs\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"fa439810cc1b3c927ec24ede17d02467e1b143a1\", \"lessThan\": \"80a4200d51e5a7e046f4a90f5faa5bafd5a60c58\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fa439810cc1b3c927ec24ede17d02467e1b143a1\", \"lessThan\": \"7624973bc15b76d000e8e6f9b8080fcb76d36595\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fa439810cc1b3c927ec24ede17d02467e1b143a1\", \"lessThan\": \"064a1c7b0f8403260d77627e62424a72ca26cee2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fa439810cc1b3c927ec24ede17d02467e1b143a1\", \"lessThan\": \"01849382373b867ddcbe7536b9dfa89f3bcea60e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fa439810cc1b3c927ec24ede17d02467e1b143a1\", \"lessThan\": \"fd7276189450110ed835eb0a334e62d2f1c4e3be\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/powerpc/kernel/ptrace/ptrace-view.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.177\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.106\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.2.*\"}, {\"status\": \"unaffected\", \"version\": \"6.3\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/powerpc/kernel/ptrace/ptrace-view.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/80a4200d51e5a7e046f4a90f5faa5bafd5a60c58\"}, {\"url\": \"https://git.kernel.org/stable/c/7624973bc15b76d000e8e6f9b8080fcb76d36595\"}, {\"url\": \"https://git.kernel.org/stable/c/064a1c7b0f8403260d77627e62424a72ca26cee2\"}, {\"url\": \"https://git.kernel.org/stable/c/01849382373b867ddcbe7536b9dfa89f3bcea60e\"}, {\"url\": \"https://git.kernel.org/stable/c/fd7276189450110ed835eb0a334e62d2f1c4e3be\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc: Don\u0027t try to copy PPR for task with NULL pt_regs\\n\\npowerpc sets up PF_KTHREAD and PF_IO_WORKER with a NULL pt_regs, which\\nfrom my (arguably very short) checking is not commonly done for other\\narchs. This is fine, except when PF_IO_WORKER\u0027s have been created and\\nthe task does something that causes a coredump to be generated. Then we\\nget this crash:\\n\\n  Kernel attempted to read user page (160) - exploit attempt? (uid: 1000)\\n  BUG: Kernel NULL pointer dereference on read at 0x00000160\\n  Faulting instruction address: 0xc0000000000c3a60\\n  Oops: Kernel access of bad area, sig: 11 [#1]\\n  LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=32 NUMA pSeries\\n  Modules linked in: bochs drm_vram_helper drm_kms_helper xts binfmt_misc ecb ctr syscopyarea sysfillrect cbc sysimgblt drm_ttm_helper aes_generic ttm sg libaes evdev joydev virtio_balloon vmx_crypto gf128mul drm dm_mod fuse loop configfs drm_panel_orientation_quirks ip_tables x_tables autofs4 hid_generic usbhid hid xhci_pci xhci_hcd usbcore usb_common sd_mod\\n  CPU: 1 PID: 1982 Comm: ppc-crash Not tainted 6.3.0-rc2+ #88\\n  Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries\\n  NIP:  c0000000000c3a60 LR: c000000000039944 CTR: c0000000000398e0\\n  REGS: c0000000041833b0 TRAP: 0300   Not tainted  (6.3.0-rc2+)\\n  MSR:  800000000280b033 \u003cSF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE\u003e  CR: 88082828  XER: 200400f8\\n  ...\\n  NIP memcpy_power7+0x200/0x7d0\\n  LR  ppr_get+0x64/0xb0\\n  Call Trace:\\n    ppr_get+0x40/0xb0 (unreliable)\\n    __regset_get+0x180/0x1f0\\n    regset_get_alloc+0x64/0x90\\n    elf_core_dump+0xb98/0x1b60\\n    do_coredump+0x1c34/0x24a0\\n    get_signal+0x71c/0x1410\\n    do_notify_resume+0x140/0x6f0\\n    interrupt_exit_user_prepare_main+0x29c/0x320\\n    interrupt_exit_user_prepare+0x6c/0xa0\\n    interrupt_return_srr_user+0x8/0x138\\n\\nBecause ppr_get() is trying to copy from a PF_IO_WORKER with a NULL\\npt_regs.\\n\\nCheck for a valid pt_regs in both ppc_get/ppr_set, and return an error\\nif not set. The actual error value doesn\u0027t seem to be important here, so\\njust pick -EINVAL.\\n\\n[mpe: Trim oops in change log, add Fixes \u0026 Cc stable]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.177\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.106\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.23\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.10\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3\", \"versionStartIncluding\": \"4.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-16T16:12:01.464Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53326\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:32:59.132Z\", \"dateReserved\": \"2025-09-16T16:08:59.564Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-16T16:12:01.464Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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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.