CVE-2026-46182
- Source
- https://cve.org/CVERecord?id=CVE-2026-46182
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46182.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-46182
- Downstream
- Related
- Published
- 2026-05-28T09:36:35Z
- Modified
- 2026-08-12T03:30:13Z
- Summary
- pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace
The hdr variable is allocated on the stack and only hdr.version and hdr.flags are initialized explicitly. Because the struct papr_hvpipe_hdr contains reserved padding bytes (reserved[3] and reserved2[40]), these could leak the uninitialized bytes to userspace after copy_to_user().
This patch fixes that by initializing the whole struct to 0.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46182.json" }- References
-
- https://git.kernel.org/stable/c/0479b6e9f999cc1cbad7d9f09f574fc387e605d5
- https://git.kernel.org/stable/c/cefeed44296261173a806bef988b26bc565da4be
- https://git.kernel.org/stable/c/f88f8e4485b437e0a2f96a7ff1f88aa22d925659
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46182.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-46182
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git