In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix potential uninit-value access in __ip6_make_skb() As it was done in commit fc1092f51567 ("ipv4: Fix uninit-value access in __ip_make_skb()") for IPv4, check FLOWI_FLAG_KNOWN_NH on fl6->flowi6_flags instead of testing HDRINCL on the socket to avoid a race condition which causes uninit-value access.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://git.kernel.org/stable/c/2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 Patch
- https://git.kernel.org/stable/c/4e13d3a9c25b7080f8a619f961e943fe08c2672c Patch
- https://git.kernel.org/stable/c/68c8ba16ab712eb709c6bab80ff151079d11d97a Patch
- https://git.kernel.org/stable/c/2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 Patch
- https://git.kernel.org/stable/c/4e13d3a9c25b7080f8a619f961e943fe08c2672c Patch
- https://git.kernel.org/stable/c/68c8ba16ab712eb709c6bab80ff151079d11d97a Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linuxNVD modified 2026-10-15 01:18
Affected (CPE criteria) 8
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:*
References 12
- https://git.kernel.org/stable/c/2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 Patch
- https://git.kernel.org/stable/c/40e5444a3ac315b60e94d82226b73cd82145d09e
- https://git.kernel.org/stable/c/4e13d3a9c25b7080f8a619f961e943fe08c2672c Patch
- https://git.kernel.org/stable/c/59d74c843ebf46264c7903726cf6f2673a93b07a
- https://git.kernel.org/stable/c/68c8ba16ab712eb709c6bab80ff151079d11d97a Patch
- https://git.kernel.org/stable/c/a05c1ede50e9656f0752e523c7b54f3a3489e9a8
- https://git.kernel.org/stable/c/2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 Patch
- https://git.kernel.org/stable/c/4e13d3a9c25b7080f8a619f961e943fe08c2672c Patch
- https://git.kernel.org/stable/c/68c8ba16ab712eb709c6bab80ff151079d11d97a Patch
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html