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CVE-2022-50306

ext4: fix potential out of bound read in ext4_fc_replay_scan()

High7.1EPSS 0.16%
Published
Updated
Reserved
Assigned by
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix potential out of bound read in ext4_fc_replay_scan() For scan loop must ensure that at least EXT4_FC_TAG_BASE_LEN space. If remain space less than EXT4_FC_TAG_BASE_LEN which will lead to out of bound read when mounting corrupt file system image. ADD_RANGE/HEAD/TAIL is needed to add extra check when do journal scan, as this three tags will read data during scan, tag length couldn't less than data length which will read.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 11 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-2022-50306, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVDNVD · Modified3.1High7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS (exploitation in 30 days)
0.16% · top 95% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Weakness

Affected products

  • Linux · Linux

    • affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 – < 6969367c1500c15eddc38fda12f6d15518ad6d03
    • affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 – < f234294812c9b68d603650d28743eafb718e7ad5
    • affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 – < 1b45cc5c7b920fd8bf72e5a888ec7abeadf41e09

  • Linux · Linux

    • affected 5.10
    • unaffected < 5.10
    • unaffected 5.15.87 – ≤ 5.15.*
    • unaffected 6.0.6 – ≤ 6.0.*
    • unaffected 6.1 – ≤ *

References (3)

Sources

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

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Record last updated .