CVE-2022-49844
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49844
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49844.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49844
- Downstream
- Published
- 2025-05-01T14:09:58Z
- Modified
- 2025-10-16T00:58:06.943243Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- can: dev: fix skb drop check
- Details
-
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]
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6d190f8c7670068d8c154ef8477eca07b5e3574Fixed386c49fe31ee748e053860b3bac7794a933ac9ac
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6d190f8c7670068d8c154ef8477eca07b5e3574Fixedae64438be1923e3c1102d90fd41db7afcfaf54cc