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CVE-2026-23108

can: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: can: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In usb_8dev_open() -> usb_8dev_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback usb_8dev_read_bulk_callback(), the URBs are processed and resubmitted. In usb_8dev_close() -> unlink_all_urbs() the URBs are freed by calling usb_kill_anchored_urbs(&priv->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in usb_kill_anchored_urbs(). Fix the memory leak by anchoring the URB in the usb_8dev_read_bulk_callback() to the priv->rx_submitted anchor.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in feb8243eaea7efd5279b19667d7189fd8654c87a; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in ef6e608e5ee71eca0cd3475c737e684cef24f240; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in 60719661b4cbd7ffbed1a0e0fa3bbc82d8bd2be9; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in 59ff56992bba28051ad67cd8cc7b0edfe7280796; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in ea4a98e924164586066b39f29bfcc7cc9da108cd; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in 07e9373739c6388af9d99797cdb2e79dbbcbe92b; From 0024d8ad1639e32d717445c69ca813fd19c2a91c · fixed in f7a980b3b8f80fe367f679da376cf76e800f9480

  • Linux Linux

    3.9

  • KernelLinux

    From 3.9.0 · fixed in 5.10.249; From 5.11.0 · fixed in 5.15.199; From 5.16.0 · fixed in 6.1.162; From 6.2.0 · fixed in 6.6.122; From 6.7.0 · fixed in 6.12.68; From 6.13.0 · fixed in 6.18.8

References 7

git.kernel.org