dma: fix call order in dmam_free_coherent

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Summary

CVECVE-2024-43856
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-08-17 10:15:10 UTC
Updated2026-05-12 12:17:07 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: dma: fix call order in dmam_free_coherent dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list. If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match. Fix by destroying the devres entry before freeing the DMA allocation. kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-770

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 fe2d246080f035e0af5793cb79067ba125e4fb63 git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 2f7bbdc744f2e7051d1cb47c8e082162df1923c9 git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 257193083e8f43907e99ea633820fc2b3bcd24c7 git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 87b34c8c94e29fa01d744e5147697f592998d954 git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 f993a4baf6b622232e4c190d34c220179e5d61eb git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 1fe97f68fce1ba24bf823bfb0eb0956003473130 git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 22094f5f52e7bc16c5bf9613365049383650b02e git Not specified
CNA Linux Linux affected 9ac7849e35f705830f7b016ff272b0ff1f7ff759 28e8b7406d3a1f5329a03aa25a43aa28e087cb20 git Not specified
CNA Linux Linux affected 2.6.21 Not specified
CNA Linux Linux unaffected 2.6.21 semver Not specified
CNA Linux Linux unaffected 4.19.320 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.282 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.224 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.165 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.103 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.44 6.6.* semver Not specified
CNA Linux Linux unaffected 6.10.3 6.10.* semver Not specified
CNA Linux Linux unaffected 6.11 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2f7bbdc744f2e7051d1cb47c8e082162df1923c9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/22094f5f52e7bc16c5bf9613365049383650b02e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/f993a4baf6b622232e4c190d34c220179e5d61eb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/28e8b7406d3a1f5329a03aa25a43aa28e087cb20 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fe2d246080f035e0af5793cb79067ba125e4fb63 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/257193083e8f43907e99ea633820fc2b3bcd24c7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1fe97f68fce1ba24bf823bfb0eb0956003473130 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/10/msg00003.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/87b34c8c94e29fa01d744e5147697f592998d954 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
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