CVE-2026-43272
- Source
- https://cve.org/CVERecord?id=CVE-2026-43272
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43272.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-43272
- Downstream
- Related
- Published
- 2026-05-06T11:28:56.162Z
- Modified
- 2026-07-15T01:49:17.620964131Z
- Summary
- ring-buffer: Fix possible dereference of uninitialized pointer
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Fix possible dereference of uninitialized pointer
There is a pointer headpage in rbmetavalidateevents() which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure during reader page validation. In this case the control is passed to "invalid" label where the pointer is dereferenced in a loop.
To fix the issue initialize orighead and headpage before calling rbvalidatebuffer.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43272.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/bc77986f3cb7476637052edf2d87137fa39f153d
- https://git.kernel.org/stable/c/d9942396845fef2369478c157b26738fe07142f6
- https://git.kernel.org/stable/c/f1547779402c4cd67755c33616b7203baa88420b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43272.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-43272
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git