fat: fix uninitialized field in nostale filehandles

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-26973
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 06:15:13 UTC
Updated2026-05-12 12:16:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: fat: fix uninitialized field in nostale filehandles When fat_encode_fh_nostale() encodes file handle without a parent it stores only first 10 bytes of the file handle. However the length of the file handle must be a multiple of 4 so the file handle is actually 12 bytes long and the last two bytes remain uninitialized. This is not great at we potentially leak uninitialized information with the handle to userspace. Properly initialize the full handle length.

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-908

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 ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 9840d1897e28f8733cc1e38f97e044f987dc0a63 git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 f52d7663a10a1266a2d3871a6dd8fd111edc549f git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 a276c595c3a629170b0f052a3724f755d7c6adc6 git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 c8cc05de8e6b5612b6e9f92c385c1a064b0db375 git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 03a7e3f2ba3ca25f1da1d3898709a08db14c1abb git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 74f852654b8b7866f15323685f1e178d3386c688 git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 cdd33d54e789d229d6d5007cbf3f53965ca1a5c6 git Not specified
CNA Linux Linux affected ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 fde2497d2bc3a063d8af88b258dbadc86bd7b57c git Not specified
CNA Linux Linux affected 3.10 Not specified
CNA Linux Linux unaffected 3.10 semver Not specified
CNA Linux Linux unaffected 4.19.312 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.274 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.215 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.154 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.84 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.24 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.12 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.3 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/74f852654b8b7866f15323685f1e178d3386c688 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/cdd33d54e789d229d6d5007cbf3f53965ca1a5c6 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/fde2497d2bc3a063d8af88b258dbadc86bd7b57c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9840d1897e28f8733cc1e38f97e044f987dc0a63 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/f52d7663a10a1266a2d3871a6dd8fd111edc549f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/03a7e3f2ba3ca25f1da1d3898709a08db14c1abb af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/a276c595c3a629170b0f052a3724f755d7c6adc6 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/c8cc05de8e6b5612b6e9f92c385c1a064b0db375 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
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