CVE-2026-74459can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 7a0171b4921ad443fee5ed4fcb9d99fa4776edac before c7ddf119544eea2d8409e12471c3f9f36ca02e3f; 2185ea6e4ebcb61d1224dc7d187c59723cb5ad59 builds before 21da1a374769751546cc131e58a4d8bd968f57b2; from f6e90c113c92e83fc0963d5e60e16b0e8a268981 before 0ef136ba052101243ba117a1aca6f4a4c3a81142; from b878444519fa03a3edd287d1963cf79ef78be2f1 before b85e5c310382803d27adf6fe6554d4208bc8951c; from 18eee279e9b5bff0db1aca9475ae4bc12804f05c before c311f17c261fd375ddf5755f2ebe1f022c19c5b0; from 5eaad4f768266f1f17e01232ffe2ef009f8129b7 before 19c6c8c6cd5dd14fab5fcd744584812a57cbb78d; from 5eaad4f768266f1f17e01232ffe2ef009f8129b7 before 7a0cf2b2497c757c3cb1286eddf2986abb0d387b; b8f9ca88253574638bcff38900a4c28d570b1919; and 6 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f
- https://git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2
- https://git.kernel.org/stable/c/0ef136ba052101243ba117a1aca6f4a4c3a81142
- https://git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c
- https://git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0
- https://git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d
- https://git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.