Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f984b51e0779a6dd30feedc41404013ca54e5d05 before dc1b1a057b3bb901f83433700e604fe0ae67c5f2; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 6aee2d478545c089dd5d055d3c9f0c7ea034fb80; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 4e4ab09db7899d7f2d2293a18adf0fa200a27e73; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 2df964d141270c40f07547b0c2e0a51e2573d46d; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 876014b4eeb927146430e7591cf959a7ceb8d64a; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before a20a0010eb6485f60cd64e15ebc85a4bd388642e; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 60234845142fddb27db89ebc00a65178421fb3a4; affected f984b51e0779a6dd30feedc41404013ca54e5d05 before 12b80cdbc54cf615b4717a4e8180063408091ea2 |
| Linux / Linux | affected 2.6.27; unaffected 0 before 2.6.27; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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