Bug 2269875 (CVE-2021-47109) - CVE-2021-47109 kernel: neighbour: allow NUD_NOARP entries to be forced GCed
Summary: CVE-2021-47109 kernel: neighbour: allow NUD_NOARP entries to be forced GCed
Status: NEW
Alias: CVE-2021-47109
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Product Security
QA Contact:
Depends On: 2269876
Blocks: 2269857
TreeView+ depends on / blocked
Reported: 2024-03-16 18:45 UTC by Avinash Hanwate
Modified: 2024-06-09 16:45 UTC (History)
50 users (show)

Fixed In Version: kernel 5.4.125, kernel 5.10.43, kernel 5.12.10, kernel 5.13
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Description Avinash Hanwate 2024-03-16 18:45:06 UTC
In the Linux kernel, the following vulnerability has been resolved:

neighbour: allow NUD_NOARP entries to be forced GCed

The Linux kernel CVE team has assigned CVE-2021-47109 to this issue.

Upstream advisory:

Comment 1 Avinash Hanwate 2024-03-16 18:45:37 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2269876]

Comment 5 Justin M. Forbes 2024-03-26 16:12:17 UTC
This was fixed for Fedora with the 5.12.10 stable kernel updates.

Comment 10 Alex 2024-06-09 16:45:10 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47109 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags REMOTE SIMPLEFIX IMPROVEONLY  ; these flags parsed automatically based on patch 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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