CVE-2026-53095: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix abuse of kprobe_write_ctx via freplace uprobe programs are allowed to modify struct pt_regs. Since the actual program type of uprobe is KPROBE, it can be abused to modify struct pt_regs via kprobe+freplace when the kprobe attaches to kernel functions. For example, SEC("?kprobe") int kprobe(struct pt_regs *regs) { return 0; } SEC("?freplace") int freplace_kprobe(struct pt_regs *regs) { regs->di = 0; return 0; } freplace_kprobe prog will attach to kprobe prog. kprobe prog will attach to a kernel function. Without this patch, when the kernel function runs, its first arg will always be set as 0 via the freplace_kprobe prog. To fix the abuse of kprobe_write_ctx=true via kprobe+freplace, disallow attaching freplace programs on kprobe programs with different kprobe_write_ctx values.

Засегнати продукти

• Linux Linux: 7384893d970ea114952aef54ad7e3d7d2ca82d4f преди b312cf41b9e43f442613053f6cad39898e1baf96; 7384893d970ea114952aef54ad7e3d7d2ca82d4f преди 9836cadbd96c7e0dbb0018fa60e7872dd31ac4f8; 7384893d970ea114952aef54ad7e3d7d2ca82d4f преди 611fe4b79af72d00d80f2223354284447daafae9
• Linux Linux: 6.18; преди 6.18; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53095
• https://nvd.nist.gov/vuln/detail/CVE-2026-53095
• https://git.kernel.org/stable/c/b312cf41b9e43f442613053f6cad39898e1baf96
• https://git.kernel.org/stable/c/9836cadbd96c7e0dbb0018fa60e7872dd31ac4f8
• https://git.kernel.org/stable/c/611fe4b79af72d00d80f2223354284447daafae9