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CVE-2026-23216— scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在持有锁时调用complete函数，可能导致释放后重用。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux e48354ce078c079996f89d715dfa44814b4eba01< ba684191437380a07b27666eb4e72748be1ea201 affected
e48354ce078c079996f89d715dfa44814b4eba01< 8518f072fc92921418cd9ed4268dd4f3e9a8fd75 affected
e48354ce078c079996f89d715dfa44814b4eba01< 275016a551ba1a068a3bd6171b18611726b67110 affected
e48354ce078c079996f89d715dfa44814b4eba01< 73b487d44bf4f92942629d578381f89c326ff77f affected
e48354ce078c079996f89d715dfa44814b4eba01< 48fe983e92de2c59d143fe38362ad17ba23ec7f3 affected
e48354ce078c079996f89d715dfa44814b4eba01< 3835e49e146a4e6e7787b29465f1a23379b6ec44 affected
e48354ce078c079996f89d715dfa44814b4eba01< 9411a89e9e7135cc459178fa77a3f1d6191ae903 affected
3.1 affected
… +8 more rows
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I. Basic Information for CVE-2026-23216

Vulnerability Information
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Vulnerability Title
scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()
Source: CVE Program / CVE List V5
Vulnerability 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().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在持有锁时调用complete函数，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e48354ce078c079996f89d715dfa44814b4eba01 ~ ba684191437380a07b27666eb4e72748be1ea201 -
Linux Linux 3.1 -

II. Public POCs for CVE-2026-23216

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III. Intelligence Information for CVE-2026-23216

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Same Patch Batch · Linux · 2026-02-18 · 31 CVEs total

CVE-2025-71234 8.8 HIGH wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
CVE-2026-23230 8.8 HIGH smb: client: split cached_fid bitfields to avoid shared-byte RMW races
CVE-2026-23226 8.8 HIGH ksmbd: add chann_lock to protect ksmbd_chann_list xarray
CVE-2026-23227 7.8 HIGH drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to
CVE-2026-23225 7.8 HIGH sched/mmcid: Don't assume CID is CPU owned on mode switch
CVE-2026-23224 7.8 HIGH erofs: fix UAF issue for file-backed mounts w/ directio option
CVE-2026-23222 7.8 HIGH crypto: omap - Allocate OMAP_CRYPTO_FORCE_COPY scatterlists correctly
CVE-2025-71236 7.5 HIGH scsi: qla2xxx: Validate sp before freeing associated memory
CVE-2025-71235 scsi: qla2xxx: Delay module unload while fabric scan in progress
CVE-2026-23212 bonding: annotate data-races around slave->last_rx
CVE-2026-23229 crypto: virtio - Add spinlock protection with virtqueue notification
CVE-2026-23228 smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
CVE-2025-71225 md: suspend array while updating raid_disks via sysfs
CVE-2026-23223 xfs: fix UAF in xchk_btree_check_block_owner
CVE-2026-23221 bus: fsl-mc: fix use-after-free in driver_override_show()
CVE-2026-23220 ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths
CVE-2025-71237 nilfs2: Fix potential block overflow that cause system hang
CVE-2025-71227 wifi: mac80211: don't WARN for connections on invalid channels
CVE-2026-23211 mm, swap: restore swap_space attr aviod kernel panic
CVE-2025-71233 PCI: endpoint: Avoid creating sub-groups asynchronously

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23216

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