by Kastro
Paper/Archive/CVE-2024-40937

CVE-2024-40937

Linux Linux — gve: Clear napi->skb before dev_kfree_skb_any()

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 54.5.545 × 2010.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: gve: Clear napi->skb before dev_kfree_skb_any() gve_rx_free_skb incorrectly leaves napi->skb referencing an skb after it is freed with dev_kfree_skb_any(). This can result in a subsequent call to napi_get_frags returning a dangling pointer. Fix this by clearing napi->skb before the skb is freed.

Affected

ProductAffectedFixed inSource
Linux9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 – < 75afd8724739ee5ed8165acde5f6ac3988b485cc75afd8724739ee5ed8165acde5f6ac3988b485ccCNA
Linux9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 – < d221284991118c0ab16480b53baecd857c0bc442d221284991118c0ab16480b53baecd857c0bc442CNA
Linux9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 – < 2ce5341c36993b776012601921d7688693f8c0372ce5341c36993b776012601921d7688693f8c037CNA
Linux9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 – < a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50CNA
Linux9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 – < 6f4d93b78ade0a4c2cafd587f7b429ce95abb02e6f4d93b78ade0a4c2cafd587f7b429ce95abb02eCNA
Linux5.145.15.162CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgit.kernel.org/stable/c/75afd8724739ee5ed8165acde5f6ac3988b485ccrefgit.kernel.org/stable/c/d221284991118c0ab16480b53baecd857c0bc442refgit.kernel.org/stable/c/2ce5341c36993b776012601921d7688693f8c037refgit.kernel.org/stable/c/a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50refgit.kernel.org/stable/c/6f4d93b78ade0a4c2cafd587f7b429ce95abb02ereflists.debian.org/debian-lts-announce/2025/01/msg00001.html