Description
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").
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 914c3b8fa175acf8476ad31cf04e308638e3578eaffectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 5f2fa5840c34d3a558c57855781be75e03bef752affectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < b9088d581fff971a7eb1628f8dcc30df6cfef4dcaffectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 525640b93d3e5f82f4ebea4730f4e0cf799522baaffectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 4bb3325075138dd5346b71589a959878b564dc0baffectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 92d0de80ca2223b9c7da78020155b6cb27824cc0affectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < dfb17bf04a764462000f11258a7c06aa92d1f261affectedbb4785551f64e18b2c8bb15a3bd2b22f5ebf624d to < 9b3d5a6d952c38bbcf07f903cbeadefdb56b9bc9affected
Linux Linux
Default version status: affected
3.4affected0 to < 3.4unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.151 to ≤ 6.6.*unaffected6.12.103 to ≤ 6.12.*unaffected6.18.44 to ≤ 6.18.*unaffected7.1.8 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- 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 ↗