dpll: fix xa_alloc_cyclic() error handling
In the Linux kernel, the following vulnerability has been resolved: dpll: fix xa_alloc_cyclic() error handling In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will be returned, which will cause IS_ERR() to be false. Which can lead to dereference not allocated pointer (pin). Fix it by checking if err is lower than zero. This wasn't found in real usecase, only noticed. Credit to Pierre.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: dpll: fix xa_alloc_cyclic() error handling In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will be returned, which will cause IS_ERR() to be false. Which can lead to dereference not allocated pointer (pin). Fix it by checking if err is lower than zero. This wasn't found in real usecase, only noticed. Credit to Pierre.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/3614bf90130d60f191a5fe218d04f6251c678e13
- https://git.kernel.org/stable/c/4d350043be684762e581d9bdd32d543621d01a9c
- https://git.kernel.org/stable/c/cb2f8a5c1fd9e7a1fefa23afe20570e16da1ada4
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22016.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-22016