net: macb: drop in-flight Tx SKBs on close
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
net: macb: drop in-flight Tx SKBs on close
The MACB driver has since forever leaked the outgoing SKBs that
have not yet been marked as completed. They live in queue->tx_skb
which gets freed without remorse nor checking.
macb_free_consistent() gets called in a few codepaths, but only close will
trigger the added expressions. In macb_open() and macb_alloc_consistent()
failure cases, queues' tx_skb just got allocated and are empty.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b