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CVE-2024-38583nilfs2: fix use-after-free of timer for log writer thread

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free of timer for log writer thread Patch series "nilfs2: fix log writer related issues". This bug fix series covers three nilfs2 log writer-related issues, including a timer use-after-free issue and potential deadlock issue on unmount, and a potential freeze issue in event synchronization found during their analysis. Details are described in each commit log. This patch (of 3): A use-after-free issue has been reported regarding the timer sc_timer on the nilfs_sc_info structure. The problem is that even though it is used to wake up a sleeping log writer thread, sc_timer is not shut down until the nilfs_sc_info structure is about to be freed, and is used regardless of the thread's lifetime. Fix this issue by limiting the use of sc_timer only while the log writer thread is alive.

Timeline

  1. ID reserved

    By Linux

  2. · 1 day later

    Published

  3. · 2 years 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-2024-38583, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.26% · top 82% 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: High 7.8.

Affected products

  • Linux · Linux

    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 822ae5a8eac30478578a75f7e064f0584931bf2d
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 82933c84f188dcfe89eb26b0b48ab5d1ca99d164
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < e65ccf3a4de4f0c763d94789615b83e11f204438
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 86a30d6302deddb9fb97ba6fc4b04d0e870b582a
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < f9186bba4ea282b07293c1c892441df3a5441cb0
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < 68e738be5c518fc3c4e9146b66f67c8fee0135fb
    • affected fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 – < f5d4e04634c9cf68bdf23de08ada0bb92e8befe7

  • Linux · Linux

    • affected 2.6.35
    • unaffected < 2.6.35
    • unaffected 4.19.316 – ≤ 4.19.*
    • unaffected 5.4.278 – ≤ 5.4.*
    • unaffected 5.10.219 – ≤ 5.10.*
    • unaffected 5.15.161 – ≤ 5.15.*
    • unaffected 6.1.94 – ≤ 6.1.*
    • unaffected 6.6.33 – ≤ 6.6.*
    • unaffected 6.8.12 – ≤ 6.8.*
    • unaffected 6.9.3 – ≤ 6.9.*
    • unaffected 6.10 – ≤ *

References

References10

Sources

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

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Record last updated .