CVE-2026-23216
In 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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In 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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110Patch
- https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44Patch
- https://git.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3Patch
- https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77fPatch
- https://git.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75Patch
- https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903Patch
- https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.