CVE-2026-98015: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put In mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads tt->ref_count after termtbl_mutex has been released. Two concurrent callers on the same mlx5_termtbl_handle race: one decrements ref_count to zero, removes the hash entry, and calls kfree(tt) while the other has already dropped the mutex and is about to evaluate if (!tt->ref_count), producing a use-after-free. Fix this by capturing the result of the decrement into a stack-local last variable before dropping the mutex. The cleanup decision is now made entirely under termtbl_mutex, and tt is not touched after kfree.

Засегнати продукти

• Linux Linux: 10caabdaad5ace85577a453da97d1f8d3b944427 преди e3ee194a790896fa92fea20b5385a354be2f2c12; 10caabdaad5ace85577a453da97d1f8d3b944427 преди b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797; 10caabdaad5ace85577a453da97d1f8d3b944427 преди 92f581cac93a71723456ac79ef54d9f60a251b42; 10caabdaad5ace85577a453da97d1f8d3b944427 преди a5833fdf53350b8b95a558fcf0056ddb1c0fe154; 10caabdaad5ace85577a453da97d1f8d3b944427 преди 304ea40ef4561671503c36e47da44a0a31b71e36; 10caabdaad5ace85577a453da97d1f8d3b944427 преди e393789e92310d7c66f57c876101779c90816a12; 10caabdaad5ace85577a453da97d1f8d3b944427 преди 18b2969073879b9cce24e1a78b118bdad54518d1; 10caabdaad5ace85577a453da97d1f8d3b944427 преди 7ee07f601f8f507c9faf25c68a49396ab8950596
• Linux Linux: 5.3; преди 5.3; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 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-2026-98015
• https://nvd.nist.gov/vuln/detail/CVE-2026-98015
• https://git.kernel.org/stable/c/e3ee194a790896fa92fea20b5385a354be2f2c12
• https://git.kernel.org/stable/c/b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797
• https://git.kernel.org/stable/c/92f581cac93a71723456ac79ef54d9f60a251b42
• https://git.kernel.org/stable/c/a5833fdf53350b8b95a558fcf0056ddb1c0fe154
• https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36
• https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12
• https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1
• https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596