CVE-2024-49980 — Improper Locking in Linux
Severity
5.5MEDIUMNVD
OSV8.8
EPSS
0.0%
top 99.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 21
Latest updateApr 1
Description
In the Linux kernel, the following vulnerability has been resolved:
vrf: revert "vrf: Remove unnecessary RCU-bh critical section"
This reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.
dev_queue_xmit_nit is expected to be called with BH disabled.
__dev_queue_xmit has the following:
/* Disable soft irqs for various locks below. Also
* stops preemption for RCU.
*/
rcu_read_lock_bh();
VRF must follow this invariant. The referenced commit removed this
protection. Which triggered a lockde…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6