CVE-2024-36974net/sched: taprio: always validate TCA_TAPRIO_ATTR_PRIOMAP
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before c6041e7124464ce7e896ee3f912897ce88a0c4ec; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before 6db4af09987cc5d5f0136bd46148b0e0460dae5b; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before d3dde4c217f0c31ab0621912e682b57e677dd923; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before 0bf6cc96612bd396048f57d63f1ad454a846e39c; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before 724050ae4b76e4fae05a923cb54101d792cf4404; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before c37a27a35eadb59286c9092c49c241270c802ae2; from a3d43c0d56f1b94e74963a2fbadfb70126d92213 before f921a58ae20852d188f70842431ce6519c4fdc36 | CNA record |
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name) | before V3.1 | CISA ADP |
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name) | all versions not affected | CISA ADP |
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name) | before V3.1 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.2 before 5.4.279; from 5.5 before 5.10.221; from 5.11 before 5.15.162; from 5.16 before 6.1.95; from 6.2 before 6.6.35; from 6.7 before 6.9.6; 6.10; 6.10 | NVD |
References
- https://git.kernel.org/stable/c/c6041e7124464ce7e896ee3f912897ce88a0c4ecpatch
- https://git.kernel.org/stable/c/6db4af09987cc5d5f0136bd46148b0e0460dae5bpatch
- https://git.kernel.org/stable/c/d3dde4c217f0c31ab0621912e682b57e677dd923patch
- https://git.kernel.org/stable/c/0bf6cc96612bd396048f57d63f1ad454a846e39cpatch
- https://git.kernel.org/stable/c/724050ae4b76e4fae05a923cb54101d792cf4404patch
- https://git.kernel.org/stable/c/c37a27a35eadb59286c9092c49c241270c802ae2patch
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.