crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption

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Summary

CVECVE-2026-43033
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 15:16:47 UTC
Updated2026-07-14 13:18:53 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption When decrypting data that is not in-place (src != dst), there is no need to save the high-order sequence bits in dst as it could simply be re-copied from the source. However, the data to be hashed need to be rearranged accordingly. Thanks,

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: 0.000120000 probability, percentile 0.017620000 (date 2026-05-05)

Problem Types: NVD-CWE-noinfo

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

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 104880a6b470958ddc30e139c41aa4f6ed3a5234 8c62f618576519dbed6816fafc623ce592953025 git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 d589abd8b019b07075fda255ceab8c8e950cdb3f git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5 git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 d0c4ff6812386880f30bc64c2921299cc4d7b47f git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 89fe118b6470119b20c04afc36e45b81a69ea11f git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 153d5520c3f9fd62e71c7e7f9e34b59cf411e555 git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 cded4002d22177e8deaca1f257ecd932c9582b6b git Not specified
CNA Linux Linux affected 104880a6b470958ddc30e139c41aa4f6ed3a5234 e02494114ebf7c8b42777c6cd6982f113bfdbec7 git Not specified
CNA Linux Linux affected 4.3 Not specified
CNA Linux Linux unaffected 4.3 semver Not specified
CNA Linux Linux unaffected 5.10.254 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.204 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.170 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.137 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.85 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.22 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.12 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d0c4ff6812386880f30bc64c2921299cc4d7b47f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e02494114ebf7c8b42777c6cd6982f113bfdbec7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8c62f618576519dbed6816fafc623ce592953025 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/89fe118b6470119b20c04afc36e45b81a69ea11f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d589abd8b019b07075fda255ceab8c8e950cdb3f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/153d5520c3f9fd62e71c7e7f9e34b59cf411e555 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cded4002d22177e8deaca1f257ecd932c9582b6b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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