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Test your applicationsThere is no fixed version for Centos:9
kernel-debug-modules-core
.
Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules-core
package and not the kernel-debug-modules-core
package as distributed by Centos
.
See How to fix?
for Centos:9
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix softlockup in arena_map_free on 64k page kernel
On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y, arena_htab tests cause a segmentation fault and soft lockup. The same failure is not observed with 4k pages on aarch64.
It turns out arena_map_free() is calling apply_to_existing_page_range() with the address returned by bpf_arena_get_kern_vm_start(). If this address is not page-aligned the code ends up calling apply_to_pte_range() with that unaligned address causing soft lockup.
Fix it by round up GUARD_SZ to PAGE_SIZE << 1 so that the division by 2 in bpf_arena_get_kern_vm_start() returns a page-aligned value.