CVE-2026-74459: can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
Vulnerability summary
CVE-2026-74459 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.9% of scored vulnerabilities.
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 10 · Related 9Timeline
- 15-08-2026PublishedVulnerability first disclosed.
- 19-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
Risk metrics not yet published.
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.21% on 06-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: not stated in public data.
Ubuntu152 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 7.0.0-42.42
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 7.0.0-1016.17
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.8-1
- linux-6.12< 6.12.107-1~deb12u1
Linux1 product
- linux≥ 7a0171b4921ad443fee5ed4fcb9d99fa4776edac, < c7ddf119544eea2d8409e12471c3f9f36ca02e3f | ≥ 2185ea6e4ebcb61d1224dc7d187c59723cb5ad59, < 21da1a374769751546cc131e58a4d8bd968f57b2 | ≥ f6e90c113c92e83fc0963d5e60e16b0e8a268981, < 0ef136ba052101243ba117a1aca6f4a4c3a81142 | ≥ b878444519fa03a3edd287d1963cf79ef78be2f1, < b85e5c310382803d27adf6fe6554d4208bc8951c | ≥ 18eee279e9b5bff0db1aca9475ae4bc12804f05c, < c311f17c261fd375ddf5755f2ebe1f022c19c5b0 | ≥ 5eaad4f768266f1f17e01232ffe2ef009f8129b7, < 19c6c8c6cd5dd14fab5fcd744584812a57cbb78d | ≥ 5eaad4f768266f1f17e01232ffe2ef009f8129b7, < 7a0cf2b2497c757c3cb1286eddf2986abb0d387b | b8f9ca88253574638bcff38900a4c28d570b1919 | ≥ 5.15.203, < 5.15.216 | ≥ 6.1.167, < 6.1.183 | ≥ 6.6.130, < 6.6.151 | ≥ 6.12.77, < 6.12.103 | ≥ 6.18.17, < 6.18.44 | ≥ 6.19.7, < 6.20 | 7.0
3 vendors · 155 products
