usb: f_fs: Fix use-after-free for epfile

Affected versions

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

• linux linux kernel4.9 and later · before 4.14.267
• linux linux kernel4.15 and later · before 4.19.230
• linux linux kernel4.20 and later · before 5.4.180
• linux linux kernel5.5 and later · before 5.10.101
• linux linux kernel5.11 and later · before 5.15.24
• linux linux kernel5.16 and later · before 5.16.10

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

  • 5cd8f6788ff34999dbd4cbec81a6adfc215e1e60, 4.9affected
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before 32048f4be071f9a6966744243f1786f45bb22dc2affected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before cfe5f6fd335d882bcc829a1c8a7d462a455c626eaffected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before c9fc422c9a43e3d58d246334a71f3390401781dcaffected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before 0042178a69eb77a979e36a50dcce9794a3140ef8affected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before 72a8aee863af099d4434314c4536d6c9a61dcf3caffected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before 3e078b18753669615301d946297bafd69294ad2caffected · git
  • a9e6f83c2df199187a5248f824f31b6787ae23ae and later · before ebe2b1add1055b903e2acd86b290a85297edc0b3affected · git
  • 4.8.10 and later · before 4.9affected · semver
  • before 4.9not 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
• CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
  77This week
• CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
  77This week
• CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
  77This week

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.