misc: fastrpc: Don't remove map on creater_process and device_release

Affected versions

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

• linux linux kernel5.2 and later · before 5.4.230
• linux linux kernel5.5 and later · before 5.10.165
• linux linux kernel5.11 and later · before 5.15.90
• linux linux kernel5.16 and later · before 6.1.8
• linux linux kernel6.2

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

  • aaf5aa44934ad069cac805923c49f6968b9a0d49, 5.2affected
  • b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 and later · before 4b5c44e924a571d0ad07054de549624fbc04e4d7affected · git
  • b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 and later · before 193cd853145b63e670bd73740250983af1475330affected · git
  • b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 and later · before 1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8affected · git
  • b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 and later · before 35ddd482345c43d9eec1f3406c0f20a95ed4054baffected · git
  • b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 and later · before 5bb96c8f9268e2fdb0e5321cbc358ee5941efc15affected · git
  • 5.1.6 and later · before 5.2affected · semver
  • before 5.2not affected · semver
  • 5.4.230 and later · up to and including 5.4.*not affected · semver
  • 5.10.165 and later · up to and including 5.10.*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-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-2022-48871Aug 21, 2024 · tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer
  28Monitor
• ← EarlierCVE-2022-48872Aug 21, 2024 · misc: fastrpc: Fix use-after-free race condition for maps
  28Monitor
• Later →CVE-2022-48874Aug 21, 2024 · misc: fastrpc: Fix use-after-free and race in fastrpc_map_find
  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.