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Vulnerabilities

Vulnerability · CVE-2026-23219

In the Linux kernel, the following vulnerability has been resolved: mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single When CONFIG_MEM_ALLOC_PROFILING_DEBUG is

Published Feb 18, 2026 · catalog updated May 11, 2026 · Linux Linux

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-23219. EPSS is 0.13%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 9f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc929837

In the Linux kernel, the following vulnerability has been resolved: mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single When CONFIG_MEM_ALLOC_PROFILING_DEBUG is enabled, the following warning may be noticed: [ 3959.023862] ------------[ cut here ]------------ [ 3959.023891] alloc_tag was not cleared (got tag for lib/xarray.c:378) [ 3959.023947] WARNING: ./include/linux/alloc_tag.h:155 at alloc_tag_add+0x128/0x178, CPU#6: mkfs.ntfs/113998 [ 3959.023978] Modules linked in: dns_resolver tun brd overlay exfat btrfs blake2b libblake2b xor xor_neon raid6_pq loop sctp ip6_udp_tunne

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux 9f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc9298379f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc929837

How to fix CVE-2026-23219

  • Upgrade

    CVE-2026-23219 lists a fix boundary at e6c53ead2d8fa73206e0a63e9cd9aea6bc929837. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in 9f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc929837

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-23219. EPSS is 0.13%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux 9f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc929837 9f9796b413d3c417f34cae427c4e47bfdd3a7454 <e6c53ead2d8fa73206e0a63e9cd9aea6bc929837. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 18, 2026 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single When CONFIG_MEM_ALLOC_PROFILING_DEBUG is enabled, the following warning may be noticed: [ 3959.023862] ------------[ cut here ]------------ [ 3959.023891] alloc_tag was not cleared (got tag for lib/xarray.c:378) [ 3959.023947] WARNING: ./include/linux/alloc_tag

  2. May 11, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single When CONFIG_MEM_ALLOC_PROFILING_DEBUG is enabled, the following warning may be noticed: [ 3959.023862] ------------[ cut here ]------------ [ 3959.023891] alloc_tag was not cleared (got tag for lib/xarray.c:378) [ 3959.023947] WARNING: ./include/linux/alloc_tag

Sources

  • CVE.orgVulnerability recordCVE-2026-23219

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-23219

    30-day exploitation probability 0.13%

    first.org
  • EUVDVulnerability recordEUVD-2026-8080

    In the Linux kernel, the following vulnerability has been resolved: mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single When CONFIG_MEM_ALLOC_PROFILING_DEBUG is enabled, the following warning may be noticed: [ 3959.023862] ------------[ cut here ]------------ [

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • CVE.orgNov 6, 2026
  • EUVDNov 5, 2026