jffs2: fix use-after-free in jffs2_clear_xattr_subsystem

Affected versions

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

• linux linux kernel2.6.18 and later · before 4.9.311
• linux linux kernel4.10 and later · before 4.14.276
• linux linux kernel4.15 and later · before 4.19.238
• linux linux kernel4.20 and later · before 5.4.189
• linux linux kernel5.5 and later · before 5.10.110
• linux linux kernel5.11 and later · before 5.15.33
• linux linux kernel5.16 and later · before 5.16.19
• linux linux kernel5.17 and later · before 5.17.2

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

  • 2.6.18affected
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 9150cb625b46f68d524f4cfd491f1aafc23e10a9affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 3bd2454162ec6bbb5503233c804fce6e4b6dcec5affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before c3b07c875fa8f906f932976460fd14798596f101affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 30bf7244acf32f19cb722c39f7bc1c2a9f300422affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 7bb7428dd73991bf4b3a7a61b493ca50046c2b13affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 7a75740206af5f17e9f3efa384211cba70213da1affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 22327bd7988f21de3a53c1373f3b81542bfe1f44affected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 8c0f024f29e055840a5a89fe23b96ae3f921afedaffected · git
  • aa98d7cf59b5b0764d3502662053489585faf2fe and later · before 4c7c44ee1650677fbe89d86edbad9497b7679b5caffected · git

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.