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CVE-2022-49469btrfs: fix anon_dev leak in create_subvol()

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix anon_dev leak in create_subvol() When btrfs_qgroup_inherit(), btrfs_alloc_tree_block, or btrfs_insert_root() fail in create_subvol(), we return without freeing anon_dev. Reorganize the error handling in create_subvol() to fix this.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 15 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2022-49469, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.26% · top 82% of all CVEs (13 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 2dfb1e43f57dd3aeaa66f7cf05d068db2d4c8788 – < d887b3de318834f9aa637ecf79c6bc66cba7c69a
    • affected 2dfb1e43f57dd3aeaa66f7cf05d068db2d4c8788 – < 7a875ad8706f0903a0e812e0dd701956ee9826ff
    • affected 2dfb1e43f57dd3aeaa66f7cf05d068db2d4c8788 – < 2256e901f5bddc56e24089c96f27b77da932dfcc
    • affected 917d608fe375041eb7f29befa6a6d7fd3cf32dde
    • affected 5.8.3 – < 5.9

  • Linux · Linux

    • affected 5.9
    • unaffected < 5.9
    • unaffected 5.17.14 – ≤ 5.17.*
    • unaffected 5.18.3 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .