CVE-2024-26849
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-26849
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26849.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-26849
- Downstream
- Related
- Published
- 2024-04-17T11:15:08Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netlink: add nla be16/32 types to minlen array
BUG: KMSAN: uninit-value in nlavalidaterangeunsigned lib/nlattr.c:222 [inline] BUG: KMSAN: uninit-value in nlavalidateintrange lib/nlattr.c:336 [inline] BUG: KMSAN: uninit-value in validatenla lib/nlattr.c:575 [inline] BUG: KMSAN: uninit-value in _nlavalidateparse+0x2e20/0x45c0 lib/nlattr.c:631 nlavalidaterangeunsigned lib/nlattr.c:222 [inline] nlavalidateintrange lib/nlattr.c:336 [inline] validate_nla lib/nlattr.c:575 [inline] ...
The message in question matches this policy:
[NFTATARGETREV] = NLAPOLICYMAX(NLA_BE32, 255),
but because NLA_BE32 size in minlen array is 0, the validation code will read past the malformed (too small) attribute.
Note: Other attributes, e.g. BITFIELD32, SINT, UINT.. are also missing: those likely should be added too.
- References