{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80954", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.804Z", "datePublished": "2026-09-11T19:42:23.169Z", "dateUpdated": "2026-09-11T19:42:23.169Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:42:23.169Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()\n\ni3c_device_get_supported_xfer_mode() uses dev->desc to obtain the\nmaster controller. However, dev->desc must not be dereferenced unless\nbus->lock is held, and this function does not take that lock.\n\nThe function only needs access to the master controller associated with\nthe device's bus. Use dev->bus instead, which is always valid for the\nlifetime of the device and does not require dereferencing dev->desc."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i3c/device.c", "drivers/i3c/internals.h", "drivers/i3c/master.c"], "versions": [{"version": "256a21743d911f94ce92fe28f793cd586f3860b2", "lessThan": "251db58324ea4792c3f9f692ab09be148e051969", "status": "affected", "versionType": "git"}, {"version": "256a21743d911f94ce92fe28f793cd586f3860b2", "lessThan": "8bed7f4fa710914b7f05fd59998316bfb4d43385", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i3c/device.c", "drivers/i3c/internals.h", "drivers/i3c/master.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969"}, {"url": "https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"}], "title": "i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/i3c/device.c", "drivers/i3c/internals.h", "drivers/i3c/master.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "251db58324ea4792c3f9f692ab09be148e051969", "status": "affected", "version": "256a21743d911f94ce92fe28f793cd586f3860b2", "versionType": "git"}, {"lessThan": "8bed7f4fa710914b7f05fd59998316bfb4d43385", "status": "affected", "version": "256a21743d911f94ce92fe28f793cd586f3860b2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/i3c/device.c", "drivers/i3c/internals.h", "drivers/i3c/master.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"lessThan": "6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "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\ni3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()\n\ni3c_device_get_supported_xfer_mode() uses dev->desc to obtain the\nmaster controller. However, dev->desc must not be dereferenced unless\nbus->lock is held, and this function does not take that lock.\n\nThe function only needs access to the master controller associated with\nthe device's bus. Use dev->bus instead, which is always valid for the\nlifetime of the device and does not require dereferencing dev->desc."}], "id": "CVE-2026-80954", "lastModified": "2026-09-11T20:19:01.167", "metrics": {}, "published": "2026-09-11T20:19:01.167", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: i3c driver unlocked dereference leading to system instability", "id": "2532524", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532524"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's i3c driver. The `i3c_device_get_supported_xfer_mode()` function attempts to access a device descriptor without holding the necessary lock. This unlocked dereference can lead to memory corruption, potentially causing system instability or a denial of service."], "name": "CVE-2026-80954", "public_date": "2026-09-11T19:42:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80954\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80954\nhttps://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969\nhttps://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385"], "threat_severity": "Moderate"}

{}