PT-2025-43132 · Linux+1 · Linux Kernel+1
Published
2025-10-22
·
Updated
2025-11-28
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CVE-2023-53731
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852
Description
The Linux kernel contained a potential deadlock issue within the
netlink set err() function. The syzbot fuzzer identified a possible lock inversion dependency, where interrupts could lead to an inverse lock ordering between nl table lock and local->queue stop reason lock. A similar issue was previously addressed in netlink lock table(). The fix introduces IRQ safety to netlink set err() and netlink diag dump() to prevent this deadlock scenario. The issue involves the potential for a deadlock when netlink set err() is called while an interrupt handler holds a different lock, specifically local->queue stop reason lock.Recommendations
Update to a version of the Linux kernel newer than 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852.
Exploit
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Related Identifiers
Affected Products
Linux Kernel
Suse