CVE-2023-52669

crypto: s390/aes - Fix buffer overread in CTR mode

HIGH

7.8

CVSS Score

Published: May 17, 2024 at 02:01 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

HIGH7.8

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and copy it into a buffer first for processing.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

3.0 ≤ v < 5.10.2103.0 ≤ v < 5.15.1493.0 ≤ v < 6.1.763.0 ≤ v < 6.6.153.0 ≤ v < 6.7.33.0 ≤ v < 6.85.11 ≤ v < 5.15.1495.16 ≤ v < 6.1.766.2 ≤ v < 6.6.156.7 ≤ v < 6.7.3200f3ecc19660bebeabbcbaf212957fcf1dbf8f3.0

Vendor states this is fixed in a7f580cdb42ec3d53bbb7c4e4335a98423703285 (fixed)

Vendor states this is fixed in cd51e26a3b89706beec64f2d8296cfb1c34e0c79 (fixed)

Vendor states this is fixed in d07f951903fa9922c375b8ab1ce81b18a0034e3b (fixed)

Vendor states this is fixed in d68ac38895e84446848b7647ab9458d54cacba3e (fixed)

Vendor states this is fixed in dbc9a791a70ea47be9f2acf251700fe254a2ab23 (fixed)

Vendor states this is fixed in e78f1a43e72daf77705ad5b9946de66fc708b874 (fixed)

Vendor states this is fixed in 3.0 (unaffected)

Vendor states this is fixed in 5.10.210 (unaffected)

Vendor states this is fixed in 5.15.149 (unaffected)

Vendor states this is fixed in 6.1.76 (unaffected)

Vendor states this is fixed in 6.6.15 (unaffected)

Vendor states this is fixed in 6.7.3 (unaffected)