CVEvulnerability
CVE-2026-23037
- Status
- Deferred
- Published
- 2026-01-31
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
can: etas_es58x: allow partial RX URB allocation to succeed
When es58x_alloc_rx_urbs() fails to allocate the requested number of
URBs but succeeds in allocating some, it returns an error code.
This causes es58x_open() to return early, skipping the cleanup label
'free_urbs', which leads to the anchored URBs being leaked.
As pointed out by maintainer Vincent Mailhol, the driver is designed
to handle partial URB allocation gracefully. Therefore, partial
allocation should not be treated as a fatal error.
Modify es58x_alloc_rx_urbs() to return 0 if at least one URB has been
allocated, restoring the intended behavior and preventing the leak
in es58x_open().
References
- https://git.kernel.org/stable/c/611e839d2d552416b498ed5593e10670f61fcd4d git.kernel.org
- https://git.kernel.org/stable/c/6c5124a60989051799037834f0a1a4b428718157 git.kernel.org
- https://git.kernel.org/stable/c/97250eb05e4b6afe787290e8fd97d0675116c61b git.kernel.org
- https://git.kernel.org/stable/c/aec888f44853584b5a7cd01249806030cf94a73d git.kernel.org
- https://git.kernel.org/stable/c/b1979778e98569c1e78c2c7f16bb24d76541ab00 git.kernel.org
- https://git.kernel.org/stable/c/ba45e3d6b02c97dbb4578fbae7027fd66f3caa10 git.kernel.org
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html cert-portal.siemens.com