- 7.5HighCVSS base score
- 0.53%Exploitation in 30 daysEPSS · top 55% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.53% · top 55% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected c9c3321257e1b95be9b375f811fb250162af8d39 – < 9d04b4d0feee12bce6bfe37f30d8e953d3c30368
- affected c9c3321257e1b95be9b375f811fb250162af8d39 – < 4f23cb2be530785db284a685d1b1c30224d8a538
- affected c9c3321257e1b95be9b375f811fb250162af8d39 – < a85d39f14aa8a71e29cfb5eb5de02878a8779898
- affected c9c3321257e1b95be9b375f811fb250162af8d39 – < 28addf029417d53b1df062b4c87feb7bc033cb5f
- affected c9c3321257e1b95be9b375f811fb250162af8d39 – < ec791d8149ff60c40ad2074af3b92a39c916a03f
- affected 4.9
- unaffected < 4.9
- unaffected 5.4.278 – ≤ 5.4.*
- unaffected 5.10.153 – ≤ 5.10.*
- unaffected 5.15.77 – ≤ 5.15.*
- unaffected 6.0.7 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References
References5
- https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368 (opens in a new tab)
- https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538 (opens in a new tab)
- https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898 (opens in a new tab)
- https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f (opens in a new tab)
- https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-55833 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-50865)Record last updated .