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CVE-2022-49798tracing: Fix race where eprobes can be called before the event

Description

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix race where eprobes can be called before the event The flag that tells the event to call its triggers after reading the event is set for eprobes after the eprobe is enabled. This leads to a race where the eprobe may be triggered at the beginning of the event where the record information is NULL. The eprobe then dereferences the NULL record causing a NULL kernel pointer bug. Test for a NULL record to keep this from happening.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 13 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-2022-49798, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.14% · top 96% 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 4.7.

Affected products

  • Linux · Linux

    • affected 7491e2c442781a1860181adb5ab472a52075f393 – < 7291dec4f2d17a2d3fd1f789fb41e58476539f21
    • affected 7491e2c442781a1860181adb5ab472a52075f393 – < 73f5191467ffe3af82f27fe0ea6a8c2fac724d3f
    • affected 7491e2c442781a1860181adb5ab472a52075f393 – < 94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26

  • Linux · Linux

    • affected 5.15
    • unaffected < 5.15
    • unaffected 5.15.80 – ≤ 5.15.*
    • unaffected 6.0.10 – ≤ 6.0.*
    • unaffected 6.1 – ≤ *

References

References3

Sources

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

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Record last updated .