CVE-2024-50073: tty: n_gsm: Fix use-after-free in gsm_cleanup_mux

Affected versions

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

• linux linux kernelbefore 6.1.114
• linux linux kernel6.2 and later · before 6.6.58
• linux linux kernel6.7 and later · before 6.11.5
• linux linux kernel6.12

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

  • 5020173e7e7725110a8d4be1359bf1dfc4b1814d, c165698c9919b000bdbe73859d3bb7b33bdb9223, 7962a4b900099cf90e02859bb297f2c618d8d940, 6.0affected
  • 0af021678d5d30c31f5a6b631f404ead3575212a and later · before bf171b5e86e41de4c1cf32fb7aefa275c3d7de49affected · git
  • 0af021678d5d30c31f5a6b631f404ead3575212a and later · before c29f192e0d44cc1cbaf698fa1ff198f63556691aaffected · git
  • 0af021678d5d30c31f5a6b631f404ead3575212a and later · before 0eec592c6a7460ba795d7de29f3dc95cb5422e62affected · git
  • 0af021678d5d30c31f5a6b631f404ead3575212a and later · before 9462f4ca56e7d2430fdb6dcc8498244acbfc4489affected · git
  • 5.15.209 and later · before 5.16affected · semver
  • 5.18.18 and later · before 5.19affected · semver
  • 5.19.2 and later · before 5.20affected · semver
  • before 6.0not affected · semver
  • 6.1.114 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-2024-50071Oct 28, 2024 · pinctrl: nuvoton: fix a double free in ma35_pinctrl_dt_node_to_map_func()
  31Monitor
• ← EarlierCVE-2024-50072Oct 28, 2024 · x86/bugs: Use code segment selector for VERW operand
  22Monitor
• Later →CVE-2024-50074Oct 28, 2024 · parport: Proper fix for array out-of-bounds access
  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.