7.8 CVE-2025-21726
Patch
In the Linux kernel, the following vulnerability has been resolved:
padata: avoid UAF for reorder_work
Although the previous patch can avoid ps and ps UAF for _do_serial, it
can not avoid potential UAF issue for reorder_work. This issue can
happen just as below:
crypto_request crypto_request crypto_del_alg
padata_do_serial
...
padata_reorder
// processes all remaining
// requests then breaks
while (1) {
if (!padata)
break;
...
}
padata_do_serial
// new request added
list_add
// sees the new request
queue_work(reorder_work)
padata_reorder
queue_work_on(squeue->work)
...
<kworker context>
padata_serial_worker
// completes new request,
// no more outstanding
// requests
crypto_del_alg
// free pd
<kworker context>
invoke_padata_reorder
// UAF of pd
To avoid UAF for 'reorder_work', get 'pd' ref before put 'reorder_work'
into the 'serial_wq' and put 'pd' ref until the 'serial_wq' finish.
https://nvd.nist.gov/vuln/detail/CVE-2025-21726
Categories
CWE-416
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
af854a3a-2127-422b-91ae-364da2661108 Patch
CPE
| cpe | start | end |
|---|---|---|
| Configuration 1 | ||
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 5.4.19 | < 5.5 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 5.5.3 | < 5.10.235 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 5.11 | < 5.15.79 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 5.16 | < 6.1.129 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 6.2 | < 6.6.76 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 6.7 | < 6.12.13 |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | >= 6.13 | < 6.13.2 |
REMEDIATION
Patch
EXPLOITS
Exploit-db.com
| id | description | date | |
|---|---|---|---|
| No known exploits | |||
POC Github
| Url |
|---|
Other Nist (github, ...)
| Url |
|---|
| No known exploits |
CAPEC
Common Attack Pattern Enumerations and Classifications
| id | description | severity |
|---|---|---|
| No entry | ||
Cybersecurity needs ?
Strengthen software security from the outset with our DevSecOps expertise
Integrate security right from the start of the software development cycle for more robust applications and greater customer confidence.
Our team of DevSecOps experts can help you secure your APIs, data pipelines, CI/CD chains, Docker containers and Kubernetes deployments.
