CVE-2025-39763
- Source
- https://cve.org/CVERecord?id=CVE-2025-39763
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39763.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-39763
- Downstream
BELL (1)
ECHO (1)
MINI (1)
openSUSE (1)
ROOT (4)
SUSE (15)
- Related
- Published
- 2025-09-11T16:52:31Z
- Modified
- 2026-10-20T10:30:49Z
- Summary
- ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered
If a synchronous error is detected as a result of user-space process triggering a 2-bit uncorrected error, the CPU will take a synchronous error exception such as Synchronous External Abort (SEA) on Arm64. The kernel will queue a memory_failure() work which poisons the related page, unmaps the page, and then sends a SIGBUS to the process, so that a system wide panic can be avoided.
However, no memory_failure() work will be queued when abnormal synchronous errors occur. These errors can include situations like invalid PA, unexpected severity, no memory failure config support, invalid GUID section, etc. In such a case, the user-space process will trigger SEA again. This loop can potentially exceed the platform firmware threshold or even trigger a kernel hard lockup, leading to a system reboot.
Fix it by performing a force kill if no memory_failure() work is queued for synchronous errors.
[ rjw: Changelog edits ]
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39763.json" }- References
-
- https://git.kernel.org/stable/c/082735fbcdb6cd0cf20fbec94516ab2996f1cdd5
- https://git.kernel.org/stable/c/2fbc85da9ac9386bd89fcc94e0aadaea19d47784
- https://git.kernel.org/stable/c/3cb4f18797247985b0f51d5300f8cb6c78f343ea
- https://git.kernel.org/stable/c/79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060
- https://git.kernel.org/stable/c/af089e41811a1ad6a7b2b80e839a73ec4c3cecdd
- https://git.kernel.org/stable/c/cfc9bc15bda6fd0c496cbe2c628564d4d7c332c1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39763.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-39763
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462Fixed2fbc85da9ac9386bd89fcc94e0aadaea19d47784Fixed082735fbcdb6cd0cf20fbec94516ab2996f1cdd5Fixedcfc9bc15bda6fd0c496cbe2c628564d4d7c332c1Fixedaf089e41811a1ad6a7b2b80e839a73ec4c3cecddFixed3cb4f18797247985b0f51d5300f8cb6c78f343eaFixed79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.4.69Fixed5.5
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedaf02933d59bd1621a48d8b0b331cca9e530ba14b
Affected versions
v5.*
Linux / Kernel
Package
- Name
- Kernel