CVE-2026-53384: serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails

Affected versions

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

• linux linux kernel5.19 and later · before 6.1.177
• linux linux kernel6.2 and later · before 6.6.144
• linux linux kernel6.7 and later · before 6.12.95
• linux linux kernel6.13 and later · before 6.18.38
• linux linux kernel6.19 and later · before 7.0.14
• linux linux kernel7.1 and later · before 7.1.2

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

  • 5.19affected
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before ccdf4510a3873b14e5e348cdb038717996f09fdaaffected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before 511d2b92f8d20de04acafab676150d26fb5c67f4affected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before 07ffe414a708ae60551401cec5d727ed156b8cafaffected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before 3d205fe80f2181f0109150ad1fa06ee5bc046935affected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before d72650a4f334581b23a1892b888a4cb1be142f76affected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before 778b9dda4b24005a27bcd9c35c110bf8d7f259caaffected · git
  • 57f83e5dd6a33c4696699954784f8fee789b1d0c and later · before 10fc708b4de7f86002d2d735a2dbf3b5b7f65692affected · git
  • before 5.19not affected · semver
  • 6.1.177 and later · up to and including 6.1.*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-2026-53377Jul 19, 2026 · drm/msm: always recover the gpu
  22Monitor
• ← EarlierCVE-2026-53381Jul 19, 2026 · virtiofs: fix UAF on submount umount
  31Monitor
• Later →CVE-2026-53388Jul 19, 2026 · fuse: re-lock request before replacing page cache folio
  31Monitor

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.