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Test your applicationsThere is no fixed version for RHEL:9
kernel-debug-modules-partner
.
Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules-partner
package and not the kernel-debug-modules-partner
package as distributed by RHEL
.
See How to fix?
for RHEL:9
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
bpf, arm64: Fix fp initialization for exception boundary
In the ARM64 BPF JIT when prog->aux->exception_boundary is set for a BPF
program, find_used_callee_regs() is not called because for a program
acting as exception boundary, all callee saved registers are saved.
find_used_callee_regs() sets ctx->fp_used = true;
when it sees FP
being used in any of the instructions.
For programs acting as exception boundary, ctx->fp_used remains false even if frame pointer is used by the program and therefore, FP is not set-up for such programs in the prologue. This can cause the kernel to crash due to a pagefault.
Fix it by setting ctx->fp_used = true for exception boundary programs as fp is always saved in such programs.