CVE-2024-36974: net/sched: taprio: always validate TCA_TAPRIO_ATTR_PRIOMAP
First published: Tue Jun 18 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: always validate TCA_TAPRIO_ATTR_PRIOMAP If one TCA_TAPRIO_ATTR_PRIOMAP attribute has been provided, taprio_parse_mqprio_opt() must validate it, or userspace can inject arbitrary data to the kernel, the second time taprio_change() is called. First call (with valid attributes) sets dev->num_tc to a non zero value. Second call (with arbitrary mqprio attributes) returns early from taprio_parse_mqprio_opt() and bad things can happen.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.10 | 6.10 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39c
- https://git.kernel.org/stable/c/6db4af09987cc5d5f0136bd46148b0e0460dae5b
- https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404
- https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2
- https://git.kernel.org/stable/c/c6041e7124464ce7e896ee3f912897ce88a0c4ec
- https://git.kernel.org/stable/c/d3dde4c217f0c31ab0621912e682b57e677dd923
- https://git.kernel.org/stable/c/f921a58ae20852d188f70842431ce6519c4fdc36
- https://launchpad.net/bugs/cve/CVE-2024-36974
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36974
- https://nvd.nist.gov/vuln/detail/CVE-2024-36974
- https://security-tracker.debian.org/tracker/CVE-2024-36974
- https://ubuntu.com/security/CVE-2024-36974
- https://git.kernel.org/linus/f921a58ae20852d188f70842431ce6519c4fdc36
- https://access.redhat.com/security/cve/CVE-2024-36974
- https://lore.kernel.org/linux-cve-announce/2024061810-CVE-2024-36974-a482@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2293003
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