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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-45948

ext4: fix memory leak in ext4_ext_shift_extents()CVE-2026-45948

Answer in brief

CVE-2026-45948 records a Unknown severity vulnerability in ext4: fix memory leak in ext4_ext_shift_extents(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 27, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 6, 2026
References
8 linked sources
Open source record

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=a18ed359bdddcded4f97ff5e2f07793ff9336913 <7e807cb8603b7664fa630a696cd891d9a03c248d || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <afc5e61e1a07b2b833bd72cbee36ecce9cd901e2 || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <1bce219ee5512cf179ba40cf114945a14a16e21f || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <4a79fde8db7eba7f1128d971ceba4e3c9ac84aec || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <2f4b1052246ca646bb17bfe0f53df2fdf9729b58 || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <12615ab4bfb69678e5d961b28bb70040299e51b1 || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <bd7b52557e4a3ccd7595fdb3a585f1257de57935 || >=a18ed359bdddcded4f97ff5e2f07793ff9336913 <ca81109d4a8f192dc1cbad4a1ee25246363c28337e807cb8603b7664fa630a696cd891d9a03c248d, afc5e61e1a07b2b833bd72cbee36ecce9cd901e2, 1bce219ee5512cf179ba40cf114945a14a16e21f, 4a79fde8db7eba7f1128d971ceba4e3c9ac84aec, 2f4b1052246ca646bb17bfe0f53df2fdf9729b58, 12615ab4bfb69678e5d961b28bb70040299e51b1, bd7b52557e4a3ccd7595fdb3a585f1257de57935, ca81109d4a8f192dc1cbad4a1ee25246363c2833
Linux/Linuxgeneric3.15Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 7e807cb8603b7664fa630a696cd891d9a03c248d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 6, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4_ext_shift_extents() In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4_find_extent(), leading to a memory leak. Fix this by jumping to the out label to ensure the path is properly released.

Quoted source text, attributed separately from HOL analysis.