CVE-2023-53559
ip_vti: fix potential slab-use-after-free in decode_session6
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ip_vti: fix potential slab-use-after-free in decode_session6 When ip_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ip_vti device sends IPv6 packets. As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 4, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f855691975bb06373a98711e4cfe2c224244b536 < 82fb41c5de243e7dfa90f32ca58e35adaff56c1d f855691975bb06373a98711e4cfe2c224244b536 < 7dfe23659f3677c08a60a0056cda2d91a79c15ca f855691975bb06373a98711e4cfe2c224244b536 < d34c30442d5e53a33cde79ca163320dbe2432cbd f855691975bb06373a98711e4cfe2c224244b536 < 0b4d69539fdea138af2befe08893850c89248068 f855691975bb06373a98711e4cfe2c224244b536 < e1e04cc2ef2c0c0866c19f5627149a76c2baae32 f855691975bb06373a98711e4cfe2c224244b536 < 2b05bf5dc437f7891dd409a3eaf5058459391c7a f855691975bb06373a98711e4cfe2c224244b536 < 78e397a43e1c47321a4679cc49a6c4530bf820b9 f855691975bb06373a98711e4cfe2c224244b536 < 6018a266279b1a75143c7c0804dd08a5fc4c3e0b
Linux / Linux
3.19
References
git.kernel.org: https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d git.kernel.org: https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca git.kernel.org: https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd git.kernel.org: https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068 git.kernel.org: https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32 git.kernel.org: https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a git.kernel.org: https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9 git.kernel.org: https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b