CVE-2025-40149: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().

Affected versions

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

• linux linux kernel4.18 and later · before 5.15.199
• linux linux kernel5.16 and later · before 6.1.161
• linux linux kernel6.2 and later · before 6.6.121
• linux linux kernel6.7 and later · before 6.12.66
• linux linux kernel6.13 and later · before 6.17.3

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

  • 4.18affected
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before 2b1bef126bbb8d0da51491357559126d567c1deeaffected · git
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before e37ca0092ddace60833790b4ad7a390408fb1be9affected · git
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before 13159c7125636371543a82cb7bbae00ab36730ccaffected · git
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before f09cd209359a23f88d4f3fa3d2379d057027e53caffected · git
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before feb474ddbf26b51f462ae2e60a12013bdcfc5407affected · git
  • e8f69799810c32dd40c6724d829eccc70baad07f and later · before c65f27b9c3be2269918e1cbad6d8884741f835c5affected · git
  • before 4.18not affected · semver
  • 5.15.199 and later · up to and including 5.15.*not affected · semver
  • 6.1.161 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-2025-40082Oct 28, 2025 · hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()
  28Monitor
• ← EarlierCVE-2025-40090Oct 30, 2025 · ksmbd: fix recursive locking in RPC handle list access
  22Monitor
• Later →CVE-2025-40164Nov 12, 2025 · usbnet: Fix using smp_processor_id() in preemptible code warnings
  22Monitor

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.