CVE-2026-74459

can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure

State: Published
Severity: Not scored
Published: Aug 15, 2026
Updated: Aug 19, 2026
Reserved: Aug 15, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure

es58x_read_bulk_callback() resubmits the RX URB after processing a received packet. If the resubmit succeeds, the URB remains anchored and will be handled by the normal RX path or by teardown.

However, if usb_submit_urb() fails, the callback unanchors the URB and then returns directly. This skips the existing free_urb path, so the coherent transfer buffer allocated with usb_alloc_coherent() is not released.

Reuse the existing free_urb path after a resubmit failure so that the RX coherent buffer is freed before leaving the callback.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	7a0171b4921ad443fee5ed4fcb9d99fa4776edac to before c7ddf119544eea2d8409e12471c3f9f36ca02e3fAffected 2185ea6e4ebcb61d1224dc7d187c59723cb5ad59 to before 21da1a374769751546cc131e58a4d8bd968f57b2Affected f6e90c113c92e83fc0963d5e60e16b0e8a268981 to before 0ef136ba052101243ba117a1aca6f4a4c3a81142Affected b878444519fa03a3edd287d1963cf79ef78be2f1 to before b85e5c310382803d27adf6fe6554d4208bc8951cAffected 18eee279e9b5bff0db1aca9475ae4bc12804f05c to before c311f17c261fd375ddf5755f2ebe1f022c19c5b0Affected 5eaad4f768266f1f17e01232ffe2ef009f8129b7 to before 19c6c8c6cd5dd14fab5fcd744584812a57cbb78dAffected 5eaad4f768266f1f17e01232ffe2ef009f8129b7 to before 7a0cf2b2497c757c3cb1286eddf2986abb0d387bAffected b8f9ca88253574638bcff38900a4c28d570b1919Affected 5.15.203 to before 5.15.216Affected 6.1.167 to before 6.1.183Affected 6.6.130 to before 6.6.151Affected 6.12.77 to before 6.12.103Affected 6.18.17 to before 6.18.44Affected 6.19.7 to before 6.20Affected
LinuxLinux	7.0Affected before 7.0Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.151 through 6.6.Not affected 6.12.103 through 6.12.Not affected 6.18.44 through 6.18.Not affected 7.1.8 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

7a0171b4921ad443fee5ed4fcb9d99fa4776edac to before c7ddf119544eea2d8409e12471c3f9f36ca02e3fAffected
2185ea6e4ebcb61d1224dc7d187c59723cb5ad59 to before 21da1a374769751546cc131e58a4d8bd968f57b2Affected
f6e90c113c92e83fc0963d5e60e16b0e8a268981 to before 0ef136ba052101243ba117a1aca6f4a4c3a81142Affected
b878444519fa03a3edd287d1963cf79ef78be2f1 to before b85e5c310382803d27adf6fe6554d4208bc8951cAffected
18eee279e9b5bff0db1aca9475ae4bc12804f05c to before c311f17c261fd375ddf5755f2ebe1f022c19c5b0Affected
5eaad4f768266f1f17e01232ffe2ef009f8129b7 to before 19c6c8c6cd5dd14fab5fcd744584812a57cbb78dAffected
5eaad4f768266f1f17e01232ffe2ef009f8129b7 to before 7a0cf2b2497c757c3cb1286eddf2986abb0d387bAffected
b8f9ca88253574638bcff38900a4c28d570b1919Affected
5.15.203 to before 5.15.216Affected
6.1.167 to before 6.1.183Affected
6.6.130 to before 6.6.151Affected
6.12.77 to before 6.12.103Affected
6.18.17 to before 6.18.44Affected
6.19.7 to before 6.20Affected

LinuxLinux

7.0Affected
before 7.0Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.151 through 6.6.*Not affected
6.12.103 through 6.12.*Not affected
6.18.44 through 6.18.*Not affected
7.1.8 through 7.1.*Not affected
7.2 and laterNot affected

References

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