CVE-2024-0562
Kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c
A use-after-free flaw was found in the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback.
Fixes and workarounds
Workaround
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
kernel
https://git.kernel.org/pub/scm/linux/kernel |
≥ 0; < 6.0-rc3 (affected, semver)
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-372.87.1.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-372.87.1.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.8 high |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2024:0412CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-0562CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2258475CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://patchwork.kernel.org/project/linux-mm/patch/[email protected]/CNA: redhat
- https://access.redhat.com/errata/RHSA-2024:0412ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/security/cve/CVE-2024-0562ADP: CVE · vdb-entry, x_refsource_REDHAT, x_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=2258475ADP: CVE · issue-tracking, x_refsource_REDHAT, x_transferred
- https://patchwork.kernel.org/project/linux-mm/patch/[email protected]/ADP: CVE · x_transferred
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