Bug 2266894 (CVE-2021-46991) - CVE-2021-46991 kernel: i40e: Fix use-after-free in i40e_client_subtask()
Summary: CVE-2021-46991 kernel: i40e: Fix use-after-free in i40e_client_subtask()
Status: NEW
Alias: CVE-2021-46991
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Product Security
QA Contact:
Depends On: 2266895
Blocks: 2266939
TreeView+ depends on / blocked
Reported: 2024-02-29 08:21 UTC by Avinash Hanwate
Modified: 2024-06-18 17:52 UTC (History)
50 users (show)

Fixed In Version: kernel 4.19.191, kernel 5.4.120, kernel 5.10.38, kernel 5.11.22, kernel 5.12.5, kernel 5.13
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Description Avinash Hanwate 2024-02-29 08:21:42 UTC
In the Linux kernel, the following vulnerability has been resolved:

i40e: Fix use-after-free in i40e_client_subtask()

The Linux kernel CVE team has assigned CVE-2021-46991 to this issue.

Upstream advisory:

Comment 1 Avinash Hanwate 2024-02-29 08:22:19 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266895]

Comment 5 Justin M. Forbes 2024-03-01 21:29:48 UTC
This was fixed for Fedora with the 5.12.5 stable kernel updates.

Comment 6 Alex 2024-06-09 15:14:48 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-46991 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE READ SIMPLEFIX UAF NETWORK  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

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