CVE-2025-21994
- Source
- https://cve.org/CVERecord?id=CVE-2025-21994
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21994.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21994
- Downstream
- Published
- 2025-04-02T14:00:37.407Z
- Modified
- 2026-05-18T05:57:24.519698596Z
- Summary
- ksmbd: fix incorrect validation for num_aces field of smb_acl
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix incorrect validation for numaces field of smbacl
parsedcal() validate numaces to allocate posixacestate_array.
if (numaces > ULONGMAX / sizeof(struct smb_ace *))
It is an incorrect validation that we can create an array of size ULONGMAX. smbacl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21994.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/1b8b67f3c5e5169535e26efedd3e422172e2db64
- https://git.kernel.org/stable/c/9c4e202abff45f8eac17989e549fc7a75095f675
- https://git.kernel.org/stable/c/a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd
- https://git.kernel.org/stable/c/c3a3484d9d31b27a3db0fab91fcf191132d65236
- https://git.kernel.org/stable/c/d0f87370622a853b57e851f7d5a5452b72300f19
- https://git.kernel.org/stable/c/f6a6721802ac2f12f4c1bbe839a4c229b61866f2
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21994.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21994
- 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
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixedc3a3484d9d31b27a3db0fab91fcf191132d65236Fixed9c4e202abff45f8eac17989e549fc7a75095f675Fixedd0f87370622a853b57e851f7d5a5452b72300f19Fixeda4cb17797a5d241f1e509cb5b46ed95a80c2f5fdFixedf6a6721802ac2f12f4c1bbe839a4c229b61866f2Fixed1b8b67f3c5e5169535e26efedd3e422172e2db64