cve-2026-23111-poc

CVE-2026-23111 For more details, see notes.md Description CVE Description from NIST An inverted logical check in nftmapcatchallactivate causes nftchain-use reference count to not be restored when a DELSET operation is aborted. This allows triggering UAF, and can be abused to obtain local privileg...

UBUNTU-CVE-2026-23111

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: fix inverted genmask check in nftmapcatchallactivate nftmapcatchallactivate has an inverted element activity check compared to its non-catchall counterpart nftmapelemactivate and compared to what is logically...

CVE-2026-23111 netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: fix inverted genmask check in nftmapcatchallactivate nftmapcatchallactivate has an inverted element activity check compared to its non-catchall counterpart nftmapelemactivate and compared to what is logically...

PT-2026-7991

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the nf tables component of the Linux kernel. The nft map catchall activate function contains a logic bug where an inverted element activity check is...