CVE-2026-43373net: ncsi: fix skb leak in error paths
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak. Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.
- 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
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 138635cc27c9737f940c3aa80912ff7a61c825af builds before 9891d7f4f1ede473c54b49776ae07755083eef06; from 138635cc27c9737f940c3aa80912ff7a61c825af before fef5aa6e3bcf3c8053307642663a63b7362d7552; 138635cc27c9737f940c3aa80912ff7a61c825af builds before 81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a; from 138635cc27c9737f940c3aa80912ff7a61c825af before 59962588197863d0d746879f193905c0c6b3df49; from 138635cc27c9737f940c3aa80912ff7a61c825af before 553366c271479c0d571dd1bb5d1bcde4747fb82e; from 138635cc27c9737f940c3aa80912ff7a61c825af before b70c4e5e711931cdd56e6e905737b72f1e649189; 138635cc27c9737f940c3aa80912ff7a61c825af builds before 87138dde2d6937b12b967f28fe598a7d59000ae4; 138635cc27c9737f940c3aa80912ff7a61c825af builds before 5c3398a54266541610c8d0a7082e654e9ff3e259 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.8 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 7.0; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06patch
- https://git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552patch
- https://git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4apatch
- https://git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49patch
- https://git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82epatch
- https://git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189patch
- https://git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4patch
- https://git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259patch
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.