CVE-2026-31391
crypto: atmel-sha204a - Fix OOM ->tfm_count leak
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix OOM ->tfm_count leak If memory allocation fails, decrement ->tfm_count to avoid blocking future reads.
INFO
Published Date :
April 3, 2026, 4:16 p.m.
Last Modified :
May 26, 2026, 12:59 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply the kernel patch for atmel-sha204a.
- Ensure memory allocation does not block reads.
- Decrement tfm_count on allocation failure.
Public PoC/Exploit Available at Github
CVE-2026-31391 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-31391.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31391 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-31391
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
DSA and DLA for Debian last 14 days
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31391 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31391 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 26, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.130 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.78 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.20 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 6.1.167 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.3 up to (excluding) 5.10.253 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1ab70c260cf16f931a728b2cb63fff5f38c814d8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2bfc83cee05f8b9604502df27d94e8e2b4a3dbf1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/66ee9c1c3575b5d6afc340faca00fd40ed5b7ad9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6f502049a96b368ea6646c49d9520d6f69a101fa Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c2d0c45dbb9eb272385ae919b17eef5a5318d3f8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d240b079a37e90af03fd7dfec94930eb6c83936e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/fd262dc6d758232511127372eba866b7600739ba Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 18, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/c2d0c45dbb9eb272385ae919b17eef5a5318d3f8 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 03, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix OOM ->tfm_count leak If memory allocation fails, decrement ->tfm_count to avoid blocking future reads. Added Reference https://git.kernel.org/stable/c/1ab70c260cf16f931a728b2cb63fff5f38c814d8 Added Reference https://git.kernel.org/stable/c/2bfc83cee05f8b9604502df27d94e8e2b4a3dbf1 Added Reference https://git.kernel.org/stable/c/66ee9c1c3575b5d6afc340faca00fd40ed5b7ad9 Added Reference https://git.kernel.org/stable/c/6f502049a96b368ea6646c49d9520d6f69a101fa Added Reference https://git.kernel.org/stable/c/d240b079a37e90af03fd7dfec94930eb6c83936e Added Reference https://git.kernel.org/stable/c/fd262dc6d758232511127372eba866b7600739ba