CVE-2024-26601

    Dashboard / Vulnerabilities / CVE-2024-26601

    CVE-2024-26601

    Published: 24 Feb 2024Last Modified: 12 Aug 2026

    Summary: ext4: regenerate buddy after block freeing failed if under fc replay

    Details: In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

    References: https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581, https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4, https://git.kernel.org/stable/c/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a, https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326, https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4e, https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cb, https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26601.json, https://nvd.nist.gov/vuln/detail/CVE-2024-26601, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0983142c5f17a62055ec851372273c3bc77e4788
    Fixed -94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a

    Affected versions

    v5.10.210
    v5.10.209
    v5.10.208
    v5.10.207
    v5.10.206
    v5.10.205
    v5.10.204
    v5.10.203
    v5.10.202
    v5.10.201
    v5.10.200
    v5.10.199
    v5.10.198
    v5.10.197
    v5.10.196
    v5.10.195
    v5.10.194
    v5.10.193
    v5.10.192
    v5.10.191
    v5.10.190
    v5.10.189
    v5.10.188
    v5.10.187
    v5.10.186
    v5.10.185
    v5.10.184
    v5.10.183
    v5.10.182
    v5.10.181

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2024-26601 | CVE-DB