Description
In the Linux kernel, the following vulnerability has been resolved: tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map(). If these functions are invoked while mmio_trace_array is NULL (e.g. before initialization or after disabled), accessing tr->array_buffer.buffer will result in a NULL pointer dereference crash. Fix this by adding an explicit NULL check for tr at the beginning of __trace_mmiotrace_rw() and __trace_mmiotrace_map().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
f984b51e0779a6dd30feedc41404013ca54e5d05 to < dc1b1a057b3bb901f83433700e604fe0ae67c5f2affectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 6aee2d478545c089dd5d055d3c9f0c7ea034fb80affectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 4e4ab09db7899d7f2d2293a18adf0fa200a27e73affectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 2df964d141270c40f07547b0c2e0a51e2573d46daffectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 876014b4eeb927146430e7591cf959a7ceb8d64aaffectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < a20a0010eb6485f60cd64e15ebc85a4bd388642eaffectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 60234845142fddb27db89ebc00a65178421fb3a4affectedf984b51e0779a6dd30feedc41404013ca54e5d05 to < 12b80cdbc54cf615b4717a4e8180063408091ea2affected
Linux Linux
Default version status: affected
2.6.27affected0 to < 2.6.27unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.103 to ≤ 6.12.*unaffected6.18.44 to ≤ 6.18.*unaffected7.1.8 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/dc1b1a057b3bb901f83433700e604fe0ae67c5f2 ↗
- https://git.kernel.org/stable/c/6aee2d478545c089dd5d055d3c9f0c7ea034fb80 ↗
- https://git.kernel.org/stable/c/4e4ab09db7899d7f2d2293a18adf0fa200a27e73 ↗
- https://git.kernel.org/stable/c/2df964d141270c40f07547b0c2e0a51e2573d46d ↗
- https://git.kernel.org/stable/c/876014b4eeb927146430e7591cf959a7ceb8d64a ↗
- https://git.kernel.org/stable/c/a20a0010eb6485f60cd64e15ebc85a4bd388642e ↗
- https://git.kernel.org/stable/c/60234845142fddb27db89ebc00a65178421fb3a4 ↗
- https://git.kernel.org/stable/c/12b80cdbc54cf615b4717a4e8180063408091ea2 ↗