dm flakey: don't corrupt the zero page

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54317
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-30 13:16:20 UTC
Updated2026-08-04 11:16:40 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001340000 probability, percentile 0.033170000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c6cd92fcabd6cc78bb1808c6a18245c842722fc1 b7f8892f672222dbfcc721f51edc03963212b249 git Not specified
CNA Linux Linux affected d4c637af2e56ee1ec66ee34d0ac5a13c75911aec 98e311be44dbe31ad9c42aa067b2359bac451fda git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 3c4a56ef7c538d16c1738ba0ccea9e7146105b5a git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 f2b478228bfdd11e358c5bc197561331f5d5c394 git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 ff60b2bb680ebcaf8890814dd51084a022891469 git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 be360c83f2d810493c04f999d69ec9152981e0c0 git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 63d31617883d64b43b0e2d529f0751f40713ecae git Not specified
CNA Linux Linux affected a00f5276e26636cbf72f24f79831026d2e2868e7 f50714b57aecb6b3dc81d578e295f86d9c73f078 git Not specified
CNA Linux Linux affected 1ed7c9f45fb893877ffa7cedd7aa61beaadbb328 git Not specified
CNA Linux Linux affected 4.14.158 4.14.308 semver Not specified
CNA Linux Linux affected 4.19.88 4.19.276 semver Not specified
CNA Linux Linux affected 4.9.206 4.10 semver Not specified
CNA Linux Linux affected 5.0 Not specified
CNA Linux Linux unaffected 5.0 semver Not specified
CNA Linux Linux unaffected 4.14.308 4.14.* semver Not specified
CNA Linux Linux unaffected 4.19.276 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.235 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.173 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.99 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.16 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.3 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ff60b2bb680ebcaf8890814dd51084a022891469 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f50714b57aecb6b3dc81d578e295f86d9c73f078 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b7f8892f672222dbfcc721f51edc03963212b249 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f2b478228bfdd11e358c5bc197561331f5d5c394 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/63d31617883d64b43b0e2d529f0751f40713ecae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3c4a56ef7c538d16c1738ba0ccea9e7146105b5a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/be360c83f2d810493c04f999d69ec9152981e0c0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/98e311be44dbe31ad9c42aa067b2359bac451fda 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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