net/sched: cls_u32: use skb_header_pointer_careful()
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.1epss 0.1%
probabilidade de exploração
0.1%top 98% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
net/sched: cls_u32: use skb_header_pointer_careful()
skb_header_pointer() does not fully validate negative @offset values.
Use skb_header_pointer_careful() instead.
GangMin Kim provided a report and a repro fooling u32_classify():
BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0
net/sched/cls_u32.c:221
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Produtos afetados
Linux · LinuxReferências
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5https://git.kernel.org/stable/c/29681ed51e737be14d18ecd1c304c57002e4b72chttps://git.kernel.org/stable/c/66e4b63d61c15de6ca5332d9ca6db59a404d7136https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5