crypto: arm64/neonbs - fix out-of-bounds access on short input
The bit-sliced implementation of AES-CTR operates on blocks of 128
bytes, and will fall back to the plain NEON version for tail blocks or
inputs that are shorter than 128 bytes to begin with.
It will call straight into the plain NEON asm helper, which performs all
memory accesses in granules of 16 bytes (the size of a NEON register).
For this reason, the associated plain NEON glue code will copy inputs
shorter than 16 bytes into a temporary buffer, given that this is a rare
occurrence and it is not worth the effort to work around this in the asm
code.
The fallback from the bit-sliced NEON version fails to take this into
account, potentially resulting in out-of-bounds accesses. So clone the
same workaround, and use a temp buffer for short in/outputs.
Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-5658-1 | linux security update |
Ubuntu USN |
USN-6895-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6895-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6895-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6895-4 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6900-1 | Linux kernel vulnerabilities |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 04 Apr 2025 14:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:* |
|
| Vendors & Products |
Linux
Linux linux Kernel |
Fri, 01 Nov 2024 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
ssvc
|
Thu, 19 Sep 2024 10:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-125 |
Projects
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-04T08:56:34.241Z
Reserved: 2024-02-19T14:20:24.178Z
Link: CVE-2024-26789
Updated: 2024-08-02T00:14:13.508Z
Status : Analyzed
Published: 2024-04-04T09:15:08.400
Modified: 2025-04-04T14:29:32.797
Link: CVE-2024-26789
OpenCVE Enrichment
No data.
Debian DSA
Ubuntu USN