Bug 1227800 (CVE-2024-40940)

Summary: VUL-0: CVE-2024-40940: kernel: net/mlx5: Fix tainted pointer delete is case of flow rules creation fail
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: Normal    
Priority: P3 - Medium CC: denis.kirjanov, miroslav.franc, rfrohl, tbogendoerfer
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/413867/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-40940:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-07-15 12:47:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/mlx5: Fix tainted pointer delete is case of flow rules creation fail

In case of flow rule creation fail in mlx5_lag_create_port_sel_table(),
instead of previously created rules, the tainted pointer is deleted
deveral times.
Fix this bug by using correct flow rules pointers.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40940
https://www.cve.org/CVERecord?id=CVE-2024-40940
https://git.kernel.org/stable/c/229bedbf62b13af5aba6525ad10b62ad38d9ccb5
https://git.kernel.org/stable/c/531eab2da27dd42d68dfb841d82e987f4a6738b8
https://git.kernel.org/stable/c/a03a3fa12769e25f4385bee587afe1445aee7f7a
https://git.kernel.org/stable/c/d857df86837ac1c30592e8a068204d16feac9930
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40940.mbox