CVE-2023-6931: Out-of-bounds write in Linux kernel's Performance Events system component
First published: Mon Dec 04 2023(Updated: )
A flaw was found in the Linux kernel. It is possible to overflow a perf_event's read_size, causing an out-of-bounds write in perf_read_group(). The check meant to prevent such an overflow in perf_event_validate_size() does not account for groups of events with mixed read_format values. The flaw can be triggered with events created with PERF_FORMAT_GROUP or events added with PERF_FORMAT_GROUP after some preconditions. The bug was introduced around fa8c269353d5 ("perf/core: Invert perf_read_group() loops"). Fixes: a723968c0ed3 ("perf: Fix u16 overflows"). Reference: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b">https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b</a>
Credit: cve-coordination@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.3<6.7 | |
| Debian Debian Linux | =10.0 | |
| IBM QRadar SIEM | <=7.5 - 7.5.0 UP8 IF01 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b
- https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://launchpad.net/bugs/cve/CVE-2023-6931
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2255286
- https://access.redhat.com/errata/RHSA-2024:0930
- https://access.redhat.com/errata/RHSA-2024:1019
- https://access.redhat.com/errata/RHSA-2024:1018
- https://access.redhat.com/errata/RHSA-2024:1404
- https://access.redhat.com/errata/RHSA-2024:1607
- https://access.redhat.com/errata/RHSA-2024:1614
- https://access.redhat.com/errata/RHSA-2024:1840
- https://access.redhat.com/errata/RHSA-2024:1836
- https://access.redhat.com/errata/RHSA-2024:2394
- https://bugzilla.redhat.com/show_bug.cgi?id=2252731
- https://exchange.xforce.ibmcloud.com/vulnerabilities/275563
- https://www.ibm.com/support/pages/node/7150684 (Advisory)
- https://git.kernel.org/linus/382c27f4ed28f803b1f1473ac2d8db0afc795a1b
- https://security-tracker.debian.org/tracker/CVE-2023-6931
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6931
- https://nvd.nist.gov/vuln/detail/CVE-2023-6931
- https://ubuntu.com/security/CVE-2023-6931
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