Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix out-of-bounds issue when preparing trampoline image We get the size of the trampoline image during the dry run phase and allocate memory based on that size. The allocated image will then be populated with instructions during the real patch phase. But after commit 26ef208c209a ("bpf: Use arch_bpf_trampoline_size"), the `im` argument is inconsistent in the dry run and real patch phase. This may cause emit_imm in RV64 to generate a different number of instructions when generating the 'im' address, potentially causing out-of-bounds issues. Let's emit the maximum number of instructions for the "im" address during dry run to fix this problem.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 26ef208c209a0e6eed8942a5d191b39dccfa6e38 before 3e6a1b1b179abb643ec3560c02bc3082bc92285f; affected 26ef208c209a0e6eed8942a5d191b39dccfa6e38 before 9f1e16fb1fc9826001c69e0551d51fbbcd2d74e9 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.10.3 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3e6a1b1b179abb643ec3560c02bc3082bc92285f
- https://git.kernel.org/stable/c/9f1e16fb1fc9826001c69e0551d51fbbcd2d74e9
ADP enrichment
No English description supplied.
No references supplied.