5.5

CVE-2024-49948

net: add more sanity checks to qdisc_pkt_len_init()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.9 < 4.19.323
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.285
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.227
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.168
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.113
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.55
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.14
Linux ≫ Linux Kernel Version >= 6.11 < 6.11.3
Linux ≫ Linux Kernel Version6.12 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.205
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1eebe602a8d8264a12e35e39d0645fa88dbbacdd
Patch
https://git.kernel.org/stable/c/2415f465730e48b6e38da1c7c097317bf5dd2d20
Patch
https://git.kernel.org/stable/c/27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4
Patch
https://git.kernel.org/stable/c/473426a1d53a68dd1e718e6cd00d57936993fa6c
Patch
https://git.kernel.org/stable/c/566a931a1436d0e0ad13708ea55479b95426213c
Patch
https://git.kernel.org/stable/c/9b0ee571d20a238a22722126abdfde61f1b2bdd0
Patch
https://git.kernel.org/stable/c/ab9a9a9e9647392a19e7a885b08000e89c86b535
Patch
https://git.kernel.org/stable/c/d7d1a28f5dd57b4d83def876f8d7b4403bd37df9
Patch
https://git.kernel.org/stable/c/ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2
Patch
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