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CVE-2022-49844

can: dev: fix skb drop check PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: can: dev: fix skb drop check In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan. This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv. [mkl: patch pch_can, too]

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected a6d190f8c7670068d8c154ef8477eca07b5e3574 before 386c49fe31ee748e053860b3bac7794a933ac9ac; affected a6d190f8c7670068d8c154ef8477eca07b5e3574 before ae64438be1923e3c1102d90fd41db7afcfaf54cc
Linux / Linuxaffected 6.0; unaffected 0 before 6.0; unaffected 6.0.9 through 6.0.*; unaffected 6.1 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.