CVE-2026-23216

NameCVE-2026-23216
DescriptionIn the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure. If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure. Fix this by releasing the spinlock before calling complete().
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4498-1, DLA-4499-1, DSA-6141-1, DSA-6163-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1vulnerable
bullseye (security)5.10.251-1fixed
bookworm6.1.159-1vulnerable
bookworm (security)6.1.164-1fixed
trixie6.12.73-1fixed
trixie (security)6.12.74-2fixed
forky6.19.8-1fixed
sid6.19.10-1fixed
linux-6.1 (PTS)bullseye (security)6.1.164-1~deb11u1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebullseye5.10.251-1DLA-4498-1
linuxsourcebookworm6.1.164-1DSA-6163-1
linuxsourcetrixie6.12.73-1DSA-6141-1
linuxsource(unstable)6.18.10-1
linux-6.1sourcebullseye6.1.164-1~deb11u1DLA-4499-1

Notes

https://git.kernel.org/linus/9411a89e9e7135cc459178fa77a3f1d6191ae903 (6.19-rc7)

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