Bug 2266890 (CVE-2021-46992) - CVE-2021-46992 kernel: netfilter: nftables: avoid overflows in nft_hash_buckets()
Summary: CVE-2021-46992 kernel: netfilter: nftables: avoid overflows in nft_hash_bucke...
Keywords:
Status: NEW
Alias: CVE-2021-46992
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2266891
Blocks: 2266939
TreeView+ depends on / blocked
 
Reported: 2024-02-29 08:19 UTC by Avinash Hanwate
Modified: 2024-06-16 13:30 UTC (History)
50 users (show)

Fixed In Version: kernel 4.14.233, 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 08:19:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: nftables: avoid overflows in nft_hash_buckets()

The Linux kernel CVE team has assigned CVE-2021-46992 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022826-CVE-2021-46992-e8e8@gregkh/T/#u
Comment 1 Avinash Hanwate 2024-02-29 08:19:49 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266891]
Comment 5 Justin M. Forbes 2024-03-01 21:31:05 UTC 
This was fixed for Fedora with the 5.12.5 stable kernel updates.
Comment 6 Alex 2024-06-09 15:23:30 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-46992 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE WRITE KASAN OOB NETFILTER  ; 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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