CVE-2023-3389

    Dashboard / Vulnerabilities / CVE-2023-3389

    CVE-2023-3389

    Published: 28 Jun 2023Last Modified: 12 Aug 2026

    Summary: Use after free in io_uring in the Linux Kernel

    Details: A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

    References: http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html, https://git.kernel.org, https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663, https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04, https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59, https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3389.json, https://nvd.nist.gov/vuln/detail/CVE-2023-3389, https://security.netapp.com/advisory/ntap-20230731-0001/, https://www.debian.org/security/2023/dsa-5480, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=4716c73b188566865bdd79c3a6709696a224ac04, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=0e388fce7aec40992eadee654193cad345d62663, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 62fb9874f5da54fdb243003b386128037319b219
    Fixed -6995e2de6891c724bfeb2db33d7b87775f913ad1

    Affected versions

    v6.4-rc7

    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-2023-3389 | CVE-DB