CVE-2022-49114: scsi: libfc: Fix use after free in fc_exch_abts_resp()

Affected versions

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

• linux linux kernelbefore 4.9.311
• linux linux kernel4.10 and later · before 4.14.276
• linux linux kernel4.15 and later · before 4.19.238
• linux linux kernel4.20 and later · before 5.4.189
• linux linux kernel5.5 and later · before 5.10.111
• linux linux kernel5.11 and later · before 5.15.34
• linux linux kernel5.16 and later · before 5.16.20
• linux linux kernel5.17 and later · before 5.17.3

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

  • 2.6.29affected
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 4a131d4ea8b581ac9b01d3a72754db4848be3232affected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 499d198494e77b6533251b9b909baf5c101129cbaffected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 6044ad64f41c87382cfeeca281573d1886d80cbeaffected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836affected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 1d7effe5fff9d28e45e18ac3a564067c7ddfe898affected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before f581df412bc45c95176e3c808ee2839c05b2ab0caffected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 87909291762d08fdb60d19069d7a89b5b308d0efaffected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 412dd8299b02e4410fe77b8396953c1a8dde183aaffected · git
  • 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and later · before 271add11994ba1a334859069367e04d2be2ebdd4affected · git

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-2022-49112Feb 26, 2025 · mt76: fix monitor mode crash with sdio driver
  22Monitor
• ← EarlierCVE-2022-49113Feb 26, 2025 · powerpc/secvar: fix refcount leak in format_show()
  22Monitor
• Later →CVE-2022-49115Feb 26, 2025 · PCI: endpoint: Fix misused goto label
  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.