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ubuntucveUbuntu.comUB:CVE-2024-26925
HistoryApr 25, 2024 - 12:00 a.m.

CVE-2024-26925

2024-04-2500:00:00
ubuntu.com
ubuntu.com
4
linux
kernel
netfilter
vulnerability
fixed
mutex
nft_gc_seq_end
object collection
module dependencies
transaction replay

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.2%

In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path
The commit mutex should not be released during the critical section between
nft_gc_seq_begin() and nft_gc_seq_end(), otherwise, async GC worker could
collect expired objects and get the released commit lock within the same GC
sequence. nf_tables_module_autoload() temporarily releases the mutex to
load module dependencies, then it goes back to replay the transaction
again. Move it at the end of the abort phase after nft_gc_seq_end() is
called.

Notes

Author Note
Priority reason: Reported by Google kCTF

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.2%