Bug 1227836 (CVE-2024-40937)

Summary: VUL-0: CVE-2024-40937: kernel: gve: clear napi->skb before dev_kfree_skb_any()
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Thomas Bogendoerfer <tbogendoerfer>
Status: NEW --- QA Contact: Security Team bot <security-team>
Severity: Major    
Priority: P2 - High CC: camila.matos, denis.kirjanov, meissner, miroslav.franc, tbogendoerfer
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/413864/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-40937:7.8:(AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---
Bug Depends on:    
Bug Blocks: 1227903    

Description SMASH SMASH 2024-07-15 14:03:52 UTC 
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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40937
https://www.cve.org/CVERecord?id=CVE-2024-40937
https://git.kernel.org/stable/c/2ce5341c36993b776012601921d7688693f8c037
https://git.kernel.org/stable/c/6f4d93b78ade0a4c2cafd587f7b429ce95abb02e
https://git.kernel.org/stable/c/75afd8724739ee5ed8165acde5f6ac3988b485cc
https://git.kernel.org/stable/c/a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50
https://git.kernel.org/stable/c/d221284991118c0ab16480b53baecd857c0bc442
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40937.mbox