Description
In the Linux kernel, the following vulnerability has been resolved: net: add more sanity checks to qdisc_pkt_len_init() One path takes care of SKB_GSO_DODGY, assuming skb->len is bigger than hdr_len. virtio_net_hdr_to_skb() does not fully dissect TCP headers, it only make sure it is at least 20 bytes. It is possible for an user to provide a malicious 'GSO' packet, total length of 80 bytes. - 20 bytes of IPv4 header - 60 bytes TCP header - a small gso_size like 8 virtio_net_hdr_to_skb() would declare this packet as a normal GSO packet, because it would see 40 bytes of payload, bigger than gso_size. We need to make detect this case to not underflow qdisc_skb_cb(skb)->pkt_len.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1def9238d4aa2146924994aa4b7dc861f03b9362 to < d7d1a28f5dd57b4d83def876f8d7b4403bd37df9affected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 473426a1d53a68dd1e718e6cd00d57936993fa6caffected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 566a931a1436d0e0ad13708ea55479b95426213caffected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 2415f465730e48b6e38da1c7c097317bf5dd2d20affected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4affected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 9b0ee571d20a238a22722126abdfde61f1b2bdd0affected1def9238d4aa2146924994aa4b7dc861f03b9362 to < ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2affected1def9238d4aa2146924994aa4b7dc861f03b9362 to < 1eebe602a8d8264a12e35e39d0645fa88dbbacddaffected1def9238d4aa2146924994aa4b7dc861f03b9362 to < ab9a9a9e9647392a19e7a885b08000e89c86b535affected
Linux Linux
Default version status: affected
3.9affected0 to < 3.9unaffected4.19.323 to ≤ 4.19.*unaffected5.4.285 to ≤ 5.4.*unaffected5.10.227 to ≤ 5.10.*unaffected5.15.168 to ≤ 5.15.*unaffected6.1.113 to ≤ 6.1.*unaffected6.6.55 to ≤ 6.6.*unaffected6.10.14 to ≤ 6.10.*unaffected6.11.3 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d7d1a28f5dd57b4d83def876f8d7b4403bd37df9 ↗
- https://git.kernel.org/stable/c/473426a1d53a68dd1e718e6cd00d57936993fa6c ↗
- https://git.kernel.org/stable/c/566a931a1436d0e0ad13708ea55479b95426213c ↗
- https://git.kernel.org/stable/c/2415f465730e48b6e38da1c7c097317bf5dd2d20 ↗
- https://git.kernel.org/stable/c/27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4 ↗
- https://git.kernel.org/stable/c/9b0ee571d20a238a22722126abdfde61f1b2bdd0 ↗
- https://git.kernel.org/stable/c/ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2 ↗
- https://git.kernel.org/stable/c/1eebe602a8d8264a12e35e39d0645fa88dbbacdd ↗
- https://git.kernel.org/stable/c/ab9a9a9e9647392a19e7a885b08000e89c86b535 ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html ↗