CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF

Affected versions

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

• linux linux kernelbefore 4.14.276
• linux linux kernel4.15 and later · before 4.19.239
• linux linux kernel4.20 and later · before 5.4.190
• linux linux kernel5.5 and later · before 5.10.112
• linux linux kernel5.11 and later · before 5.15.35
• linux linux kernel5.16 and later · before 5.17.4
• linux linux kernel5.18

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

  • 4.12affected
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before d7c5d79e50be6e06b669141e3db1f977a0dd4e8eaffected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before e3e0e067d5b34e4a68e3cc55f8eebc413f56f8edaffected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before fb7a5115422fbd6a4d505e8844f1ef5529f10489affected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before aec36b98a1bbaa84bfd8299a306e4c12314af626affected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322affected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before a9564d84ed9f6ee71017d062d0d2182154294a4baffected · git
  • 141685a39151aea95eb56562d2953e919c6c73da and later · before a6968f7a367f128d120447360734344d5a3d5336affected · git
  • before 4.12not affected · semver
  • 4.14.276 and later · up to and including 4.14.*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-2022-49051Feb 26, 2025 · net: usb: aqc111: Fix out-of-bounds accesses in RX fixup
  27Monitor
• ← EarlierCVE-2022-49052Feb 26, 2025 · mm: fix unexpected zeroed page mapping with zram swap
  22Monitor
• Later →CVE-2022-49054Feb 26, 2025 · Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests
  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.