CVE-2022-49770: ceph: avoid putting the realm twice when decoding snaps fails

Affected versions

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

• linux linux kernel2.6.35 and later · before 4.19.268
• linux linux kernel4.20 and later · before 5.4.226
• linux linux kernel5.5 and later · before 5.10.157
• linux linux kernel5.11 and later · before 5.15.81
• linux linux kernel5.16 and later · before 6.0.10
• linux linux kernel2.6.34
• 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

  • 4.0affected
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before 274e4c79a3a2a24fba7cfe0e41113f1138785c37affected · git
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before cb7495fe957526555782ce0723f79ce92a6db22eaffected · git
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before 044bc6d3c2c0e9090b0841e7b723875756534b45affected · git
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before 2f6e2de3a5289004650118b61f138fe7c28e1905affected · git
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before fd879c83e87735ab8f00ef7755752cf0cbae24b2affected · git
  • 982d6011bc30a26e8a3d546e0e7fc7db2c255d85 and later · before 51884d153f7ec85e18d607b2467820a90e0f4359affected · git
  • before 4.0not affected · semver
  • 4.19.268 and later · up to and including 4.19.*not affected · semver
  • 5.4.226 and later · up to and including 5.4.*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-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• 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

Published before and after this one in the same product

• ← EarlierCVE-2022-49768May 1, 2025 · 9p: trans_fd/p9_conn_cancel: drop client lock earlier
  22Monitor
• ← EarlierCVE-2022-49769May 1, 2025 · gfs2: Check sb_bsize_shift after reading superblock
  22Monitor
• Later →CVE-2022-49771May 1, 2025 · dm ioctl: fix misbehavior if list_versions races with module loading
  18Monitor

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.