CVE-2024-36974

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < c6041e7124464ce7e896ee3f912897ce88a0c4ecaffected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < 6db4af09987cc5d5f0136bd46148b0e0460dae5baffected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < d3dde4c217f0c31ab0621912e682b57e677dd923affected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < 0bf6cc96612bd396048f57d63f1ad454a846e39caffected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < 724050ae4b76e4fae05a923cb54101d792cf4404affected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < c37a27a35eadb59286c9092c49c241270c802ae2affected
LinuxLinuxa3d43c0d56f1b94e74963a2fbadfb70126d92213 < f921a58ae20852d188f70842431ce6519c4fdc36affected
LinuxLinux5.2affected
LinuxLinux0 < 5.2unaffected
LinuxLinux5.4.279 <= 5.4.*unaffected
LinuxLinux5.10.221 <= 5.10.*unaffected
LinuxLinux5.15.162 <= 5.15.*unaffected
LinuxLinux6.1.95 <= 6.1.*unaffected
LinuxLinux6.6.35 <= 6.6.*unaffected
LinuxLinux6.9.6 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

Additional References

References