hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

Affected versions

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

• linux linux kernel2.6.24 and later · before 4.9.335
• linux linux kernel4.10 and later · before 4.14.301
• linux linux kernel4.15 and later · before 4.19.268
• linux linux kernel4.20 and later · before 5.4.226
• linux linux kernel5.5 and later · before 5.10.158
• linux linux kernel5.11 and later · before 5.15.82
• linux linux kernel5.16 and later · before 6.0.12
• linux linux kernel6.1

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

  • 2.6.24affected
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before f2a13196ad41c6c2ab058279dffe6c97292e753aaffected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before 798198273bf86673b970b51acdb35e57f42b3fcbaffected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before 24b9633f7db7f4809be7053df1d2e117e7c2de10affected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before 7b2b67fe1339389e0bf3c37c7a677a004ac0e4e3affected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before 90907cd4d11351ff76c9a447bcb5db0e264c47cdaffected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before 45f6e81863747c0d7bc6a95ec51129900e71467aaffected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before e65cfd1f9cd27d9c27ee5cb88128a9f79f25d863affected · git
  • 57c7c3a0fdea95eddcaeba31e7ca7dfc917682ab and later · before e2a87785aab0dac190ac89be6a9ba955e2c634f2affected · git
  • before 2.6.24not 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.