CVE-2024-36974
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39cPatch
- https://git.kernel.org/stable/c/6db4af09987cc5d5f0136bd46148b0e0460dae5bPatch
- https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404Patch
- https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2Patch
- https://git.kernel.org/stable/c/c6041e7124464ce7e896ee3f912897ce88a0c4ecPatch
- https://git.kernel.org/stable/c/d3dde4c217f0c31ab0621912e682b57e677dd923Patch
- https://git.kernel.org/stable/c/f921a58ae20852d188f70842431ce6519c4fdc36Patch
- https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39cPatch
- https://git.kernel.org/stable/c/6db4af09987cc5d5f0136bd46148b0e0460dae5bPatch
- https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404Patch
- https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2Patch
- https://git.kernel.org/stable/c/c6041e7124464ce7e896ee3f912897ce88a0c4ecPatch
- https://git.kernel.org/stable/c/d3dde4c217f0c31ab0621912e682b57e677dd923Patch
- https://git.kernel.org/stable/c/f921a58ae20852d188f70842431ce6519c4fdc36Patch
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.