can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak (Linux Linux)

CVE-2026-23058
Not available

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 11 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_usb_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 ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->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 ems_usb_close(). Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 702171adeed3607ee9603ec30ce081411e36ae42 < e2c71030dc464d437110bcfb367c493fd402bddb ; affected 702171adeed3607ee9603ec30ce081411e36ae42 < f48eabd15194b216030b32445f44230df95f5fe0 ; affected 702171adeed3607ee9603ec30ce081411e36ae42 < 61e6d3674c3d1da1475dc207b3e75c55d678d18e ; affected 702171adeed3607ee9603ec30ce081411e36ae42 < e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8 ; affected 702171adeed3607ee9603ec30ce081411e36ae42 < 46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a ; affected 702171adeed3607ee9603ec30ce081411e36ae42 < 68c62b3e53901846b5f68c5a8bade72a5d9c0b87
Linux · Linuxaffected 2.6.32 ; unaffected 0 < 2.6.32 ; unaffected 5.10.249 ≤ 5.10.* ; unaffected 5.15.199 ≤ 5.15.* ; unaffected 6.1.162 ≤ 6.1.* ; unaffected 6.6.122 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD