CVE-2026-23037

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < 97250eb05e4b6afe787290e8fd97d0675116c61baffected
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < aec888f44853584b5a7cd01249806030cf94a73daffected
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < 611e839d2d552416b498ed5593e10670f61fcd4daffected
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < ba45e3d6b02c97dbb4578fbae7027fd66f3caa10affected
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < 6c5124a60989051799037834f0a1a4b428718157affected
LinuxLinux8537257874e949a59c834cecfd5a063e11b64b0b < b1979778e98569c1e78c2c7f16bb24d76541ab00affected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.15.199 <= 5.15.*unaffected
LinuxLinux6.1.162 <= 6.1.*unaffected
LinuxLinux6.6.122 <= 6.6.*unaffected
LinuxLinux6.12.67 <= 6.12.*unaffected
LinuxLinux6.18.7 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

Additional References

References