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

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel3.1 and later · before 5.10.250
• linux linux kernel5.11 and later · before 5.15.200
• linux linux kernel5.16 and later · before 6.1.163
• linux linux kernel6.2 and later · before 6.6.124
• linux linux kernel6.7 and later · before 6.12.70
• linux linux kernel6.13 and later · before 6.18.10
• linux linux kernel6.19

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 3.1affected
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before ba684191437380a07b27666eb4e72748be1ea201affected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 8518f072fc92921418cd9ed4268dd4f3e9a8fd75affected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 275016a551ba1a068a3bd6171b18611726b67110affected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 73b487d44bf4f92942629d578381f89c326ff77faffected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 48fe983e92de2c59d143fe38362ad17ba23ec7f3affected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 3835e49e146a4e6e7787b29465f1a23379b6ec44affected · git
  • e48354ce078c079996f89d715dfa44814b4eba01 and later · before 9411a89e9e7135cc459178fa77a3f1d6191ae903affected · git
  • before 3.1not affected · semver
  • 5.10.250 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2026-23213Feb 18, 2026 · drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
  22Monitor
• ← EarlierCVE-2026-23214Feb 18, 2026 · btrfs: reject new transactions if the fs is fully read-only
  22Monitor
• Later →CVE-2026-23217Feb 18, 2026 · riscv: trace: fix snapshot deadlock with sbi ecall
  22Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.