Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync

Affected versions

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

• linux linux kernel6.1 and later · before 6.6.57
• linux linux kernel6.7 and later · before 6.11.4
• 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

  • 6.1affected
  • e07a06b4eb417f5271d33ce2240e93c62d98b7b4 and later · before 9b666a0490379c860eab380dec19a864c0bc256baffected · git
  • e07a06b4eb417f5271d33ce2240e93c62d98b7b4 and later · before 867639300759e3e1c5b1e1a5ff89231f263a32a7affected · git
  • e07a06b4eb417f5271d33ce2240e93c62d98b7b4 and later · before 98ccd44002d88cbf4edfc4480df532a3da5a013eaffected · git
  • e07a06b4eb417f5271d33ce2240e93c62d98b7b4 and later · before 18fd04ad856df07733f5bb07e7f7168e7443d393affected · git
  • before 6.1not affected · semver
  • 6.1.188 and later · up to and including 6.1.*not affected · semver
  • 6.6.57 and later · up to and including 6.6.*not affected · semver
  • 6.11.4 and later · up to and including 6.11.*not affected · semver
  • 6.12 and laternot affected · original_commit_for_fix

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-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
• CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
  83Now

Published before and after this one in the same product

• ← EarlierCVE-2024-50027Oct 21, 2024 · thermal: core: Free tzp copy along with the thermal zone
  22Monitor
• ← EarlierCVE-2024-50028Oct 21, 2024 · thermal: core: Reference count the zone in thermal_zone_get_by_id()
  22Monitor
• Later →CVE-2024-50030Oct 21, 2024 · drm/xe/ct: prevent UAF in send_recv()
  31Monitor

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.