CVE-2026-46094
- Source
- https://cve.org/CVERecord?id=CVE-2026-46094
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46094.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-46094
- Downstream
- Related
- Published
- 2026-05-27T12:58:45.304Z
- Modified
- 2026-06-27T11:55:33.016799731Z
- Summary
- ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access
The bounds check for the next xattr entry in checkxattrs() uses (void *)next >= end, which allows next to point within sizeof(u32) bytes of end. On the next loop iteration, ISLAST_ENTRY() reads 4 bytes via *(__u32 *)(entry), which can overrun the valid xattr region.
For example, if next lands at end - 1, the check passes since next < end, but ISLASTENTRY() reads 4 bytes starting at end - 1, accessing 3 bytes beyond the valid region.
Fix this by changing the check to (void *)next + sizeof(u32) > end, ensuring there is always enough space for the ISLASTENTRY() read on the subsequent iteration.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46094.json" }- References
-
- https://git.kernel.org/stable/c/520986722dbf869c122252123fc161c7302eab7d
- https://git.kernel.org/stable/c/537e065977022aa22f2c2503e8accaf16622e0fd
- https://git.kernel.org/stable/c/5a5314d2387633a272a04d1bd8727f99058e4e68
- https://git.kernel.org/stable/c/ab6da97bc310db35d4e4ef5354bc3ff626b0698c
- https://git.kernel.org/stable/c/eceafc31ea7b42c984ece10d79d505c0bb6615d5
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46094.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-46094
- 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
-
Introduced3478c83cf26bbffd026ae6a56bcb1fe544f0834eFixedab6da97bc310db35d4e4ef5354bc3ff626b0698cFixed5a5314d2387633a272a04d1bd8727f99058e4e68Fixed537e065977022aa22f2c2503e8accaf16622e0fdFixed520986722dbf869c122252123fc161c7302eab7dFixedeceafc31ea7b42c984ece10d79d505c0bb6615d5