fbdev: of: display_timing: fix refcount leak in of_get_display_timings()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
fbdev: of: display_timing: fix refcount leak in of_get_display_timings()
of_parse_phandle() returns a device_node with refcount incremented,
which is stored in 'entry' and then copied to 'native_mode'. When the
error paths at lines 184 or 192 jump to 'entryfail', native_mode's
refcount is not decremented, causing a refcount leak.
Fix this by changing the goto target from 'entryfail' to 'timingfail',
which properly calls of_node_put(native_mode) before cleanup.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/20881ad42e651c69d89eb38a2042838187900fd6https://git.kernel.org/stable/c/2b22e4fe1273c24f405ed7903349c4bbd82b6368https://git.kernel.org/stable/c/3ed019654234edb8625c05d05e15d40f74e64f70https://git.kernel.org/stable/c/69290f2d3999c5fa1a7f5d5593cfc5461fa3ee64https://git.kernel.org/stable/c/b5bdcc5afbff845834d04d651773cb6b47db5dd3https://git.kernel.org/stable/c/c5734f9030a8b1e13868d1641b5163d8e659306ehttps://git.kernel.org/stable/c/d6f34bbff07476c6abb8672c89d217824871c5edhttps://git.kernel.org/stable/c/eacf9840ae1285a1ef47eb0ce16d786e542bd4d7