CVE-2024-42271: net/iucv: fix use after free in iucv_sock_close()

Affected versions

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

• linux linux kernel3.4 and later · before 4.19.320
• linux linux kernel4.20 and later · before 5.4.282
• linux linux kernel5.5 and later · before 5.10.224
• linux linux kernel5.11 and later · before 5.15.165
• linux linux kernel5.16 and later · before 6.1.104
• linux linux kernel6.2 and later · before 6.6.45
• linux linux kernel6.7 and later · before 6.10.4
• linux linux kernel6.11

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

  • 3.4affected
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before 84f40b46787ecb67c7ad08a5bb1376141fa10c01affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before 37652fbef9809411cea55ea5fa1a170e299efcd0affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before c65f72eec60a34ace031426e04e9aff8e5f04895affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before ac758e1f663fe9bc64f6b47212a2aa18697524f5affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before 8b424c9e44111c5a76f41c6b741f8d4c4179d876affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before 01437282fd3904810603f3dc98d2cac6b8b6fc84affected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before 69620522c48ce8215e5eb55ffbab8cafee8f407daffected · git
  • 7d316b9453523498246e9e19a659c423d4c5081e and later · before f558120cd709682b739207b48cf7479fd9568431affected · git
  • before 3.4not 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-2024-42269Aug 17, 2024 · netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().
  22Monitor
• ← EarlierCVE-2024-42270Aug 17, 2024 · netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().
  22Monitor
• Later →CVE-2024-42273Aug 17, 2024 · f2fs: assign CURSEG_ALL_DATA_ATGC if blkaddr is valid
  22Monitor

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.