CVE-2025-21635rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The per-netns structure can be obtained from the table->data using container_of(), then the 'net' one can be retrieved from the listen socket (if available).
- CVSS
- 5.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- 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
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
Affected products
Linux Linux linux:linux (from the name) | from c6a58ffed53612be86b758df1cdb0b0f4305e9cb before 33b3e09a489a31b30342b77cc55290f025d95c7e; from c6a58ffed53612be86b758df1cdb0b0f4305e9cb before de8d6de0ee27be4b2b1e5b06f04aeacbabbba492; from c6a58ffed53612be86b758df1cdb0b0f4305e9cb before 7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c | CNA record |
linux linux_kernel linux:linux_kernel | from 4.6 before 6.12.10; 6.13; 6.13; 6.13; 6.13; 6.13; 6.13 | NVD |
References
- https://git.kernel.org/stable/c/33b3e09a489a31b30342b77cc55290f025d95c7e
- https://git.kernel.org/stable/c/de8d6de0ee27be4b2b1e5b06f04aeacbabbba492patch
- https://git.kernel.org/stable/c/7f5611cbc4871c7fb1ad36c2e5a9edad63dca95cpatch
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.