Bug 2267829 (CVE-2021-47106) - CVE-2021-47106 kernel: netfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()
Summary: CVE-2021-47106 kernel: netfilter: nf_tables: fix use-after-free in nft_set_ca...
Status: NEW
Alias: CVE-2021-47106
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Product Security
QA Contact:
Depends On:
Blocks: 2268181
TreeView+ depends on / blocked
Reported: 2024-03-04 22:22 UTC by Mauro Matteo Cascella
Modified: 2024-06-16 11:44 UTC (History)
50 users (show)

Fixed In Version: kernel 5.15.12, kernel 5.16
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Description Mauro Matteo Cascella 2024-03-04 22:22:13 UTC
In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()

The Linux kernel CVE team has assigned CVE-2021-47106 to this issue.

Upstream advisory:

Comment 5 Alex 2024-06-09 15:18:00 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47106 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE READ KASAN NETFILTER UAF KERNEL_PANIC_PLUS_UAF  ; 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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