Description
In the Linux kernel, the following vulnerability has been resolved:
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.")
syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET
Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f31398570acf0f0804c644006f7bfa9067106b0a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 401ad99a5ae7180dd9449eac104cb755f442e7f3; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8df5cd51fd70c33aa1776e5cbcd82b0a86649d73; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < bce1afaa212ec380bf971614f70909a27882b862; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7d9868180bd1e4cf37e7c5067362658971162366; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e68dd80ba498265d2266b12dc3459164f4ff0c4a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 |
| Linux | Linux | 2.6.12 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < V1.1.1 |
References
- https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71Patch
- https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563Patch
- https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3Patch
- https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366Patch
- https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73Patch
- https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862Patch
- https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4aPatch
- https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0aPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Timeline
- Published
- Nov 7, 2024
- Last modified
- Oct 15, 2026
- NVD status
- Modified