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CVE-2023-52681efivarfs: Free s_fs_info on unmount

Description

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Free s_fs_info on unmount Now that we allocate a s_fs_info struct on fs context creation, we should ensure that we free it again when the superblock goes away.

Timeline

  1. ID reserved

    By Linux

  2. · 2 months later

    Published

  3. · 24 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-2023-52681, 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)
0.22% · top 87% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
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 5329aa5101f73c451bcd48deaf3f296685849d9c – < 92be3095c6ca1cdc46237839c6087555be9160e3
    • affected 5329aa5101f73c451bcd48deaf3f296685849d9c – < 547713d502f7b4b8efccd409cff84d731a23853b

  • Linux · Linux

    • affected 6.7
    • unaffected < 6.7
    • unaffected 6.7.2 – ≤ 6.7.*
    • unaffected 6.8 – ≤ *

References

References4

Sources

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

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Record last updated .