CVE-2022-49212

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < 0856bf27057561f42b37df111603cf5a0d040294affected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < 9843c9c98f26c6ad843260b19bfdaa2598f2ae1eaffected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < 9b08d211db4c447eb1a07df65e45e0aa772e0fa6affected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < a3587259ae553e41d1ce8c7435351a5d6b299a11affected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < fe0e2ce5c87e9c0b9485ff566362030aa55972cfaffected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < 8baea2b96fa90af8d0f937caf4cf2105ee094d93affected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < f1694169f3674cdf7553aed06864254635679878affected
LinuxLinuxf88fc122cc34c2545dec9562eaab121494e401ef < fecbd4a317c95d73c849648c406bcf1b6a0ec1cfaffected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux4.14.276 <= 4.14.*unaffected
LinuxLinux4.19.238 <= 4.19.*unaffected
LinuxLinux5.4.189 <= 5.4.*unaffected
LinuxLinux5.10.110 <= 5.10.*unaffected
LinuxLinux5.15.33 <= 5.15.*unaffected
LinuxLinux5.16.19 <= 5.16.*unaffected
LinuxLinux5.17.2 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References