CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error In peak_usb_start(), each RX URB transfer buffer is allocated with kmalloc() and the URB is flagged URB_FREE_BUFFER so that the final usb_free_urb() also frees the transfer buffer. If usb_submit_urb() fails, the error path frees the buffer explicitly with kfree(buf) and then calls usb_free_urb(urb). Because URB_FREE_BUFFER is set, usb_free_urb() -> urb_destroy() frees the same buffer a second time, a double free of the transfer buffer. BUG: KASAN: double-free in usb_free_urb.part.0+0x91/0xb0 Free of addr ffff8881069ccb80 by task trigger.sh/285 Call Trace: kfree+0x113/0x3c0 usb_free_urb.part.0+0x91/0xb0 Drop the redundant kfree(buf); usb_free_urb() already releases the transfer buffer. This mirrors commit 03819abbeb11 ("net: usb: lan78xx: Fix double free issue with interrupt buffer allocation").
Засегнати продукти
- Linux Linux: bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 914c3b8fa175acf8476ad31cf04e308638e3578e; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 5f2fa5840c34d3a558c57855781be75e03bef752; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди b9088d581fff971a7eb1628f8dcc30df6cfef4dc; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 525640b93d3e5f82f4ebea4730f4e0cf799522ba; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 4bb3325075138dd5346b71589a959878b564dc0b; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 92d0de80ca2223b9c7da78020155b6cb27824cc0; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди dfb17bf04a764462000f11258a7c06aa92d1f261; bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d преди 9b3d5a6d952c38bbcf07f903cbeadefdb56b9bc9
- Linux Linux: 3.4; преди 3.4; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; 7.2 до *
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-74456
- https://nvd.nist.gov/vuln/detail/CVE-2026-74456
- https://git.kernel.org/stable/c/914c3b8fa175acf8476ad31cf04e308638e3578e
- https://git.kernel.org/stable/c/5f2fa5840c34d3a558c57855781be75e03bef752
- https://git.kernel.org/stable/c/b9088d581fff971a7eb1628f8dcc30df6cfef4dc
- https://git.kernel.org/stable/c/525640b93d3e5f82f4ebea4730f4e0cf799522ba
- https://git.kernel.org/stable/c/4bb3325075138dd5346b71589a959878b564dc0b
- https://git.kernel.org/stable/c/92d0de80ca2223b9c7da78020155b6cb27824cc0
- https://git.kernel.org/stable/c/dfb17bf04a764462000f11258a7c06aa92d1f261
- https://git.kernel.org/stable/c/9b3d5a6d952c38bbcf07f903cbeadefdb56b9bc9