CVE-2023-52581
netfilter: nf_tables: fix memleak when more than 255 elements expired
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memleak when more than 255 elements expired When more than 255 elements expired we're supposed to switch to a new gc container structure. This never happens: u8 type will wrap before reaching the boundary and nft_trans_gc_space() always returns true. This means we recycle the initial gc container structure and lose track of the elements that came before. While at it, don't deref 'gc' after we've passed it to call_rcu.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:HAttack ComplexityHigh
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
Novell Inc.
commercial·US
Linux
oss-projectaka the linux kernel
ООО «Ред Софт»
commercial·RUaka red soft
Сообщество свободного программного обеспечения
oss-projectaka fsf
and 5 more affected products View all →
Exploitability
Official Patch Available
References
https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125
git.kernel.org
https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01
git.kernel.org
https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8
git.kernel.org
and 501 more references View all →
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