Unscored severity · published Jan 31, 2026
CVE-2026-23037
can: etas_es58x: allow partial RX URB allocation to succeed
–
CVSS
0.2%
EPSS
No
On KEV
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().
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
8537257874e949a59c834cecfd5a063e11b64b0b before 97250eb05e4b6afe787290e8fd97d0675116c61b; 8537257874e949a59c834cecfd5a063e11b64b0b before aec888f44853584b5a7cd01249806030cf94a73d; 8537257874e949a59c834cecfd5a063e11b64b0b before 611e839d2d552416b498ed5593e10670f61fcd4d; 8537257874e949a59c834cecfd5a063e11b64b0b before ba45e3d6b02c97dbb4578fbae7027fd66f3caa10; 8537257874e949a59c834cecfd5a063e11b64b0b before 6c5124a60989051799037834f0a1a4b428718157; 8537257874e949a59c834cecfd5a063e11b64b0b before b1979778e98569c1e78c2c7f16bb24d76541ab00; +1 more · source: vendor
RR
RUGGEDCOM RST2428P · Siemens
before V4.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23037
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23037
git.kernel.org
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
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