CVE-2022-50865tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c9c3321257e1b95be9b375f811fb250162af8d39 before 9d04b4d0feee12bce6bfe37f30d8e953d3c30368; from c9c3321257e1b95be9b375f811fb250162af8d39 before 4f23cb2be530785db284a685d1b1c30224d8a538; from c9c3321257e1b95be9b375f811fb250162af8d39 before a85d39f14aa8a71e29cfb5eb5de02878a8779898; from c9c3321257e1b95be9b375f811fb250162af8d39 before 28addf029417d53b1df062b4c87feb7bc033cb5f; from c9c3321257e1b95be9b375f811fb250162af8d39 before ec791d8149ff60c40ad2074af3b92a39c916a03f | CNA record |
References
- https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368
- https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538
- https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898
- https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f
- https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.