CVE-2022-48674: erofs: fix pcluster use-after-free on UP platforms

Affected versions

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

• linux linux kernel4.19.26 and later · before 4.20
• linux linux kernel4.20.13 and later · before 5.15.68
• linux linux kernel5.16 and later · before 5.19.9
• linux linux kernel6.0

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

  • 08ec9e6892cc792d7f8fe4d13bd8a0e91fb23488, 78c46113413bea1cc345757112aa2642e0f66de5, 5.0affected
  • 73f5c66df3e26ab750cefcb9a3e08c71c9f79cad and later · before 8ddd001cef5e82d19192e6861068463ecca5f556affected · git
  • 73f5c66df3e26ab750cefcb9a3e08c71c9f79cad and later · before 94c34faaafe7b55adc2d8d881db195b646959b9eaffected · git
  • 73f5c66df3e26ab750cefcb9a3e08c71c9f79cad and later · before 2f44013e39984c127c6efedf70e6b5f4e9dcf315affected · git
  • 4.19.26 and later · before 4.20affected · semver
  • 4.20.13 and later · before 4.21affected · semver
  • before 5.0not affected · semver
  • 5.15.68 and later · up to and including 5.15.*not affected · semver
  • 5.19.9 and later · up to and including 5.19.*not affected · semver
  • 6.0 and laternot affected · original_commit_for_fix

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-2022-48672May 3, 2024 · of: fdt: fix off-by-one error in unflatten_dt_nodes()
  31Monitor
• ← EarlierCVE-2022-48673May 3, 2024 · net/smc: Fix possible access to freed memory in link clear
  22Monitor
• Later →CVE-2022-48675May 3, 2024 · IB/core: Fix a nested dead lock as part of ODP flow
  22Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.