CVE-2024-50271signal: restore the override_rlimit logic
- 5.5MediumCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 85% 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: signal: restore the override_rlimit logic Prior to commit d64696905554 ("Reimplement RLIMIT_SIGPENDING on top of ucounts") UCOUNT_RLIMIT_SIGPENDING rlimit was not enforced for a class of signals. However now it's enforced unconditionally, even if override_rlimit is set. This behavior change caused production issues. For example, if the limit is reached and a process receives a SIGSEGV signal, sigqueue_alloc fails to allocate the necessary resources for the signal delivery, preventing the signal from being delivered with siginfo. This prevents the process from correctly identifying the fault address and handling the error. From the user-space perspective, applications are unaware that the limit has been reached and that the siginfo is effectively 'corrupted'. This can lead to unpredictable behavior and crashes, as we observed with java applications. Fix this by passing override_rlimit into inc_rlimit_get_ucounts() and skip the comparison to max there if override_rlimit is set. This effectively restores the old behavior.
Timeline
ID reserved
By Linux
- 29 days later
· 29 days later
Published
- 18 months later
· 18 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 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 85% of all CVEs (12 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: Medium 5.5.
Affected products
- affected d64696905554e919321e31afc210606653b8f6a4 – < 012f4d5d25e9ef92ee129bd5aa7aa60f692681e1
- affected d64696905554e919321e31afc210606653b8f6a4 – < 4877d9b2a2ebad3ae240127aaa4cb8258b145cf7
- affected d64696905554e919321e31afc210606653b8f6a4 – < 0208ea17a1e4456fbfe555f13ae5c28f3d671e40
- affected d64696905554e919321e31afc210606653b8f6a4 – < 9e05e5c7ee8758141d2db7e8fea2cab34500c6ed
- affected 5.14
- unaffected < 5.14
- unaffected 6.1.117 – ≤ 6.1.*
- unaffected 6.6.61 – ≤ 6.6.*
- unaffected 6.11.8 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References5
- https://git.kernel.org/stable/c/012f4d5d25e9ef92ee129bd5aa7aa60f692681e1 (opens in a new tab)
- https://git.kernel.org/stable/c/4877d9b2a2ebad3ae240127aaa4cb8258b145cf7 (opens in a new tab)
- https://git.kernel.org/stable/c/0208ea17a1e4456fbfe555f13ae5c28f3d671e40 (opens in a new tab)
- https://git.kernel.org/stable/c/9e05e5c7ee8758141d2db7e8fea2cab34500c6ed (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-44773 (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-2024-50271)Record last updated .