Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 before ff6bdc205fd0a83bd365405d4e31fb5905826996; affected fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 before 0bcd484587b3b3092e448d27dc369e347e1810c3; affected fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 before b82ef4985a6d05e80f604624332430351df7b79a; affected fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 before b992f01e66150fc5e90be4a96f5eb8e634c8249e |
| Linux / Linux | affected 5.9; unaffected 0 before 5.9; unaffected 5.10.96 through 5.10.*; unaffected 5.15.19 through 5.15.*; unaffected 5.16.5 through 5.16.*; unaffected 5.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996
- https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3
- https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a
- https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.