High severity7.1NVD Advisory· Published May 1, 2025· Updated Jun 17, 2026
CVE-2022-49844
CVE-2022-49844
Description
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 products
8cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.0,<6.0.9
- cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
- (no CPE)
- (no CPE)range: 6.0
Patches
Vulnerability mechanics
References
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