Back
CVE-2022-49586tcp: Fix data-races around sysctl_tcp_fastopen.
- 4.7MediumCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 92% 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 data-races around sysctl_tcp_fastopen. While reading sysctl_tcp_fastopen, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 92% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Affected products
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 03da610696a32578fc4f986479341ce9d430df08
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 25d53d858a6c0b89a6e69e376c2a57c4f4c2c8cc
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 22938534c611136f35e2ca545bb668073ca5ef49
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 539d9ab79eba3974b479cad61a8688c41fe62e12
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 448ab998947996a0a451f8229f19087964cf2670
- affected 2100c8d2d9db23c0a09901a782bb4e3b21bee298 – < 5a54213318c43f4009ae158347aa6016e3b9b55a
- affected 3.6
- unaffected < 3.6
- unaffected 4.19.254 – ≤ 4.19.*
- unaffected 5.4.208 – ≤ 5.4.*
- unaffected 5.10.134 – ≤ 5.10.*
- unaffected 5.15.58 – ≤ 5.15.*
- unaffected 5.18.15 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References
References6
- https://git.kernel.org/stable/c/03da610696a32578fc4f986479341ce9d430df08 (opens in a new tab)
- https://git.kernel.org/stable/c/25d53d858a6c0b89a6e69e376c2a57c4f4c2c8cc (opens in a new tab)
- https://git.kernel.org/stable/c/22938534c611136f35e2ca545bb668073ca5ef49 (opens in a new tab)
- https://git.kernel.org/stable/c/539d9ab79eba3974b479cad61a8688c41fe62e12 (opens in a new tab)
- https://git.kernel.org/stable/c/448ab998947996a0a451f8229f19087964cf2670 (opens in a new tab)
- https://git.kernel.org/stable/c/5a54213318c43f4009ae158347aa6016e3b9b55a (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-2022-54646 (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-2022-49586)Record last updated .