nfc: pn533: purge fragmented skbs during cleanup
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 91% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
nfc: pn533: purge fragmented skbs during cleanup
pn53x_common_clean() purges resp_q before freeing the common PN533 state,
but it leaves fragment_skb untouched. The fragmentation helpers queue
transmit fragments there while sending large initiator or target-mode
frames, and those skbs remain owned by the driver until they are sent or
discarded.
If the device is removed while fragments are still queued, the common
cleanup path frees the PN533 state without releasing the queued fragment
skbs, leaking them.
Purge fragment_skb during cleanup alongside resp_q.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/130b5ad4492f8e53d0398ee3af2b0e2388504d11https://git.kernel.org/stable/c/2f5d093194ec24d7c29b91bf7df014924e0f4ea1https://git.kernel.org/stable/c/4a52ec2457ff8c26206fcc20fa1972cc35a678c4https://git.kernel.org/stable/c/5718fc62198c38c2de5316020a90506f9e75e0bbhttps://git.kernel.org/stable/c/9319c3c4962efc8697246b563ea31c6d47f085aahttps://git.kernel.org/stable/c/d63e85c5d5555fe6aa65155d3a09452597e163c3https://git.kernel.org/stable/c/e169277281373818ae1cedf976aa1e99118fb77dhttps://git.kernel.org/stable/c/e7ed2ea5590fbe2d3be39ee4fb0c758a12e31d0chttps://git.kernel.org/stable/c/e95beff58b38c871c557bf84e528408283c2c0ad