CVE-2022-49212
mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init The reference counting issue happens in several error handling paths on a refcounted object "nc->dmac". In these paths, the function simply returns the error code, forgetting to balance the reference count of "nc->dmac", increased earlier by dma_request_channel(), which may cause refcount leaks. Fix it by decrementing the refcount of specific object in those error paths.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.12
References 8
git.kernel.org
- stable/c/0856bf27057561f42b37df111603cf5a0d040294
- stable/c/9843c9c98f26c6ad843260b19bfdaa2598f2ae1e
- stable/c/9b08d211db4c447eb1a07df65e45e0aa772e0fa6
- stable/c/a3587259ae553e41d1ce8c7435351a5d6b299a11
- stable/c/fe0e2ce5c87e9c0b9485ff566362030aa55972cf
- stable/c/8baea2b96fa90af8d0f937caf4cf2105ee094d93
- stable/c/f1694169f3674cdf7553aed06864254635679878
- stable/c/fecbd4a317c95d73c849648c406bcf1b6a0ec1cf