CVE-2026-53270: ipvs: clear the svc scheduler ptr early on edit

Affected versions

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

• linux linux kernel3.18.23 and later · before 3.19
• linux linux kernel4.1.11 and later · before 4.2
• linux linux kernel4.2.1 and later · before 5.10.259
• linux linux kernel5.11 and later · before 5.15.210
• linux linux kernel5.16 and later · before 6.1.176
• linux linux kernel6.2 and later · before 6.6.143
• linux linux kernel6.7 and later · before 6.12.94
• linux linux kernel6.13 and later · before 6.18.36
• linux linux kernel6.19 and later · before 7.0.13
• linux linux kernel4.2
• linux linux kernel7.1

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

  • c803fddd2a95a70873c68dbff42d4c59fd2e674e, 4ec8fb23158797affae7993c15beba080488482f, 4.2affected
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before d10730a1f2caf08088e0db1b19b242f3e6fa5f06affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before e4feec3174036ba772006be74beee0efa09a9eb8affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before 7d4f5004511757e3984901ffb412fcf858d80ed5affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before c6376b9b1b4d2bad638256b1b3588e073344ae69affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before 14e4689c113b4c06af1069364ade24fdd7055f33affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before 25918720ba97f974a4f8d433b5a0132c5b43f6f3affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before 19a9493faa4bf3c7bd0a386f30b60b1bb4a3da03affected · git
  • 05f00505a89acd21f5d0d20f5797dfbc4cf85243 and later · before 193989cc6d80dd8e0460fb3992e69fa03bf0ff9baffected · git
  • 3.18.23 and later · before 3.19affected · 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-2026-53268Jun 25, 2026 · netfilter: conntrack_irc: fix possible out-of-bounds read
  32Monitor
• ← EarlierCVE-2026-53269Jun 25, 2026 · netfilter: synproxy: add mutex to guard hook reference counting
  22Monitor
• Later →CVE-2026-53272Jun 25, 2026 · erofs: fix use-after-free on sbi->sync_decompress
  31Monitor

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.