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CVE-2026-74538— Bluetooth: ISO: lock sk in iso_connect_ind

CVSS 8.8 · High EPSS 0.24% · P15

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux168d9bf9c7f01df71e6404cfff66d9c2a8e968fb< e8e9cff6d80eeec28dec4cf7cc18662986945391affected
168d9bf9c7f01df71e6404cfff66d9c2a8e968fb< 9bee7e476534f27e830658dad962d85da9edf6bfaffected
168d9bf9c7f01df71e6404cfff66d9c2a8e968fb< 4311fd6f429065a8ba208660360a895627a00cf3affected
489efc9ae36f164423f5fa7ace772a7ab8131cd8affected
6.8.9< 6.9affected
6.9affected
< 6.9unaffected
6.18.44≤ 6.18.*unaffected
… +2 more rows
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I. Basic Information for CVE-2026-74538

Vulnerability Information
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Vulnerability Title
Bluetooth: ISO: lock sk in iso_connect_ind
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in iso_connect_ind Accessing iso_pi(sk)->conn requires lock_sock, which is not taken in the "ev3" part of iso_connect_ind. It may also be NULL if socket has transitioned away from the LISTEN/CONNECT states before locking. Fix by adding lock/release. Recheck hcon is valid after lock acquire where needed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 168d9bf9c7f01df71e6404cfff66d9c2a8e968fb ~ e8e9cff6d80eeec28dec4cf7cc18662986945391 -
LinuxLinux 6.9 -

II. Public POCs for CVE-2026-74538

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III. Intelligence Information for CVE-2026-74538

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Patches & Fixes for CVE-2026-74538 (2)

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

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-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
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-2026-724369.8 CRITICALnetfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-744339.8 CRITICALrxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-724229.8 CRITICALksmbd: fix use-after-free of conn->preauth_info in concurrent SMB2 NEGOTIATE
CVE-2026-721399.8 CRITICALtcp: defer md5sig_info kfree past RCU grace period in tcp_connect
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-2026-744349.8 CRITICALrxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-722999.8 CRITICALtipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-724299.8 CRITICALipv6: ioam: fix type confusion of dst_entry
CVE-2026-724519.8 CRITICALxfrm: Fix xfrm state cache insertion race
CVE-2026-720419.8 CRITICALespintcp: use sk_msg_free_partial to fix partial send
CVE-2026-744959.8 CRITICALigbvf: Fix leak in TX DMA error cleanup

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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