CVE-2026-43078
Analyzed Analyzed - Analysis Complete
Buffer Overflow Fix in Linux Kernel Crypto API

Publication date: 2026-05-06

Last updated on: 2026-05-20

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl When page reassignment was added to af_alg_pull_tsgl the original loop wasn't updated so it may try to reassign one more page than necessary. Add the check to the reassignment so that this does not happen. Also update the comment which still refers to the obsolete offset argument.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-20
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43078
EUVD
EUVD-2026-27567
Affected Vendors & Products
Showing 15 associated CPEs
Vendor Product Version / Range
linux linux_kernel 4.14
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel From 6.13 (inc) to 6.18.24 (exc)
linux linux_kernel From 6.19 (inc) to 6.19.14 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.204 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.170 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.137 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.85 (exc)
linux linux_kernel From 4.14.1 (inc) to 5.10.254 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability exists in the Linux kernel's crypto subsystem, specifically in the af_alg module. It involves a flaw in the function af_alg_pull_tsgl where a page reassignment overflow can occur. When page reassignment was introduced, the original loop controlling the reassignment was not updated properly, causing it to potentially reassign one more page than necessary. This could lead to unexpected behavior or memory handling issues. The fix involved adding a check to prevent this overflow and updating related comments.

Impact Analysis

The vulnerability could cause improper memory page reassignment in the Linux kernel's crypto module, which might lead to memory corruption or instability in the system. This could potentially be exploited to cause crashes or other unintended behavior in applications relying on the affected crypto functionality.

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