CVE-2023-54317

High

In the Linux kernel, the following vulnerability has been resolved: dm flakey: don't corrupt the zero page When we need to zero some range on a block device, the function __blkdev_issue_zero_pages submits a write bio with the bio vector pointing to the zero page. If we use dm-flakey with corrupt bio writes option, it will corrupt the content of the zero page which results in crashes of various userspace programs. Glibc assumes that memory returned by mmap is zeroed and it uses it for calloc implementation; if the newly mapped memory is not zeroed, calloc will return non-zeroed memory. Fix this bug by testing if the page is equal to ZERO_PAGE(0) and avoiding the corruption in this case.

Package Linux Kernel
Published 2025-12-30
Last modified 2026-08-04
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 4.14.158, 4.19.88, 4.9.206, 5.0 and later are affected. Fixed in 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.99, 6.1.16, 6.2.3, 6.3 and their respective stable series.

Affected from
≥ 4.14.158 ≥ 4.19.88 ≥ 4.9.206 ≥ 5.0
Fixed in
✓ 4.14.308 4.14.x ✓ 4.19.276 4.19.x ✓ 5.4.235 5.4.x ✓ 5.10.173 5.10.x ✓ 5.15.99 5.15.x ✓ 6.1.16 6.1.x ✓ 6.2.3 6.2.x ✓ 6.3

References

8 total
Showing 5 of 8 references View all on NVD

Frequently asked questions

  • What is CVE-2023-54317?

    CVE-2023-54317 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.14.158 onward and has been patched in 4.14.308, 4.19.276, 5.4.235 and others. CVE-2023-54317 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-54317?

    CVE-2023-54317 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2023-54317?

    Yes. CVE-2023-54317 has been patched. Fixed versions include 4.14.308, 4.19.276, 5.4.235 and others. If you are running Linux kernel 4.14.158 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-54317 actively exploited?

    No. CVE-2023-54317 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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