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CVE-2026-74459— can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure

AI Predicted 5.3 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 21

VendorProductVersion RangeStatus
LinuxLinuxf6e90c113c92e83fc0963d5e60e16b0e8a268981< 0ef136ba052101243ba117a1aca6f4a4c3a81142affected
b878444519fa03a3edd287d1963cf79ef78be2f1< b85e5c310382803d27adf6fe6554d4208bc8951caffected
18eee279e9b5bff0db1aca9475ae4bc12804f05c< c311f17c261fd375ddf5755f2ebe1f022c19c5b0affected
5eaad4f768266f1f17e01232ffe2ef009f8129b7< 19c6c8c6cd5dd14fab5fcd744584812a57cbb78daffected
5eaad4f768266f1f17e01232ffe2ef009f8129b7< 7a0cf2b2497c757c3cb1286eddf2986abb0d387baffected
7a0171b4921ad443fee5ed4fcb9d99fa4776edacaffected
2185ea6e4ebcb61d1224dc7d187c59723cb5ad59affected
b8f9ca88253574638bcff38900a4c28d570b1919affected
… +13 more rows
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I. Basic Information for CVE-2026-74459

Vulnerability Information
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Vulnerability Title
can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 5.15.203版本至5.16之前版本、6.1.167版本至6.2之前版本、6.6.130版本至6.6.151之前版本、6.12.77版本至6.12.103之前版本、6.18.17版本至6.18.44之前版本和6.19.7版本至6.20之前版本存在安全漏洞，该漏洞源于URB重新提交失败时未释放RX缓冲区，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux f6e90c113c92e83fc0963d5e60e16b0e8a268981 ~ 0ef136ba052101243ba117a1aca6f4a4c3a81142 -
LinuxLinux 7.0 -

II. Public POCs for CVE-2026-74459

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III. Intelligence Information for CVE-2026-74459

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Patches & Fixes for CVE-2026-74459 (4)

Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total

CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-722089.8 CRITICALntfs: add bounds check before accessing EA entries
CVE-2026-723179.8 CRITICALSUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-722099.8 CRITICALntfs: validate attribute values on lookup
CVE-2026-720659.8 CRITICALnet: mana: Validate the packet length reported by the NIC
CVE-2026-720649.8 CRITICALnet: mana: Sync page pool RX frags for CPU
CVE-2026-744279.8 CRITICALafs: Fix netns teardown to cancel the preallocation charger
CVE-2026-744289.8 CRITICALrxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-721379.8 CRITICALxfrm: nat_keepalive: avoid double free on send error
CVE-2026-724299.8 CRITICALipv6: ioam: fix type confusion of dst_entry
CVE-2026-721399.8 CRITICALtcp: defer md5sig_info kfree past RCU grace period in tcp_connect
CVE-2026-744339.8 CRITICALrxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-720469.8 CRITICALgve: fix header buffer corruption with header-split and HW-GRO

Showing top 20 of 846 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74459

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