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TI-2026-38160 Aliases CVE-2026-53073GHSA-wq7c-9cj9-76jg

Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error

Priority LOW 24CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 28 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error When hci_register_dev() fails in hci_uart_register_dev() HCI_UART_PROTO_INIT is not cleared before calling hu->proto->close(hu) and setting hu->hdev to NULL. This means incoming UART data will reach the protocol-specific recv handler in hci_uart_tty_receive() after resources are freed. Clear HCI_UART_PROTO_INIT with a write lock before calling hu->proto->close() and setting hu->hdev to NULL. The write lock ensures all active readers have completed and no new reader can enter the protocol recv path before resources are freed. This allows the protocol-specific recv functions to remove the "HCI_UART_REGISTERED" guard without risking a null pointer dereference if hci_register_dev() fails.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00114 1st percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.258, 5.15.209, 6.1.175 +8Red Hat: 7 advisoriesRed Hat: 28 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.10.237 to before 5.10.258; 5.15.181 to before 5.15.209; 6.1.135 to before 6.1.175; 6.6.88 to before 6.6.141; 6.12.24 to before 6.12.91; 5.4.293 to before 5.5; 6.13.12 to before 6.14; 6.14.3 to before 6.155.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 5.5, 6.14, 6.15Patch availableCNA
LinuxLinux6.15 and later5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1Patch availableCNA
  • Linux VendorLinux Affected 5.10.237 to before 5.10.258; 5.15.181 to before 5.15.209; 6.1.135 to before 6.1.175; 6.6.88 to before 6.6.141; 6.12.24 to before 6.12.91; 5.4.293 to before 5.5; 6.13.12 to before 6.14; 6.14.3 to before 6.15 Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 5.5, 6.14, 6.15 Patch available CNA
  • Linux VendorLinux Affected 6.15 and later Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.4.293 to before 5.5; 5.10.237 to before 5.10.258; 5.15.181 to before 5.15.209; 6.1.135 to before 6.1.175; 6.6.88 to before 6.6.141; 6.12.24 to before 6.12.91; 6.13.12 to before 6.14; 6.14.3 to before 6.18.33; 6.19 to before 7.0.10VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.293 to before 5.5; 5.10.237 to before 5.10.258; 5.15.181 to before 5.15.209; 6.1.135 to before 6.1.175; 6.6.88 to before 6.6.141; 6.12.24 to before 6.12.91; 6.13.12 to before 6.14; 6.14.3 to before 6.18.33; 6.19 to before 7.0.10 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 5.5, 6.14, 6.15
  • Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1

Red Hat 7 advisories

  • RHSA-2026:94558 Released 2026-11-03 · Red Hat rating Critical
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-core-5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-5.14.0-284.202.1.rt14.487.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-core-5.14.0-284.202.1.rt14.487.el9_2, kernel-rt-debug-5.14.0-284.202.1.rt14.487.el9_2 +11
  • RHSA-2026:94477 Released 2026-11-03 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.202.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.202.1.el9_2, kernel-64k-devel-5.14.0-284.202.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.202.1.el9_2, kernel-5.14.0-284.202.1.el9_2, kernel-64k-5.14.0-284.202.1.el9_2 +29
  • RHSA-2026:94438 Released 2026-11-03 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.154.1.el9_6, libperf-5.14.0-570.154.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.154.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.154.1.el9_6, kernel-64k-devel-5.14.0-570.154.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.154.1.el9_6, kernel-64k-5.14.0-570.154.1.el9_6, kernel-64k-core-5.14.0-570.154.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.154.1.el9_6, kernel-rt-64k-5.14.0-570.154.1.el9_6, kernel-rt-64k-core-5.14.0-570.154.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.154.1.el9_6, kernel-rt-core-5.14.0-570.154.1.el9_6, kernel-rt-debug-5.14.0-570.154.1.el9_6 +11
Show 4 more Red Hat advisories
  • RHSA-2026:94109 Released 2026-11-02 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.161.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.161.1.el9_4, kernel-64k-devel-5.14.0-427.161.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.161.1.el9_4, kernel-5.14.0-427.161.1.el9_4, kernel-64k-5.14.0-427.161.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.161.1.el9_4, kernel-rt-core-5.14.0-427.161.1.el9_4, kernel-rt-debug-5.14.0-427.161.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.161.1.el9_4, kernel-rt-core-5.14.0-427.161.1.el9_4, kernel-rt-debug-5.14.0-427.161.1.el9_4 +11
  • RHSA-2026:92362 Released 2026-10-29 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.115.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.115.1.el10_0, kernel-64k-devel-6.12.0-55.115.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.115.1.el10_0, kernel-64k-6.12.0-55.115.1.el10_0, kernel-64k-core-6.12.0-55.115.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.115.1.el10_0, libperf-6.12.0-55.115.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.115.1.el10_0, kernel-rt-64k-6.12.0-55.115.1.el10_0, kernel-rt-64k-core-6.12.0-55.115.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.115.1.el10_0, kernel-rt-core-6.12.0-55.115.1.el10_0, kernel-rt-debug-6.12.0-55.115.1.el10_0 +11
  • RHSA-2026:63129 Released 2026-09-04 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.44.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.44.1.el9_8, kernel-64k-devel-5.14.0-687.44.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.44.1.el9_8, kernel-64k-5.14.0-687.44.1.el9_8, kernel-64k-core-5.14.0-687.44.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.44.1.el9_8, libperf-5.14.0-687.44.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.44.1.el9_8, kernel-rt-64k-5.14.0-687.44.1.el9_8, kernel-rt-64k-core-5.14.0-687.44.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.44.1.el9_8, kernel-rt-core-5.14.0-687.44.1.el9_8, kernel-rt-debug-5.14.0-687.44.1.el9_8 +9
  • RHSA-2026:63128 Released 2026-09-04 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.51.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.51.1.el10_2, kernel-64k-devel-6.12.0-211.51.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.51.1.el10_2, kernel-64k-6.12.0-211.51.1.el10_2, kernel-64k-core-6.12.0-211.51.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.51.1.el10_2, libperf-6.12.0-211.51.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.51.1.el10_2, kernel-rt-64k-6.12.0-211.51.1.el10_2, kernel-rt-64k-core-6.12.0-211.51.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.51.1.el10_2, kernel-rt-core-6.12.0-211.51.1.el10_2, kernel-rt-debug-6.12.0-211.51.1.el10_2 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:94438
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:63128
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:63129
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:94477
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:94109
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:92362
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:94438
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:63128
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:63129
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:94477
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:94109
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:92362
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:94438
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:63128
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:63129
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:92362
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:63128
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:63129
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:94558
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:94109
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:92362
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:94438
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:63128
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:63129
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:94558
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:94109
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:92362
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:94438
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53073
  2. 2026-10-03 Alias added: GHSA-wq7c-9cj9-76jg
  3. 2026-10-29 Fix available: RHSA-2026:92362 · Red Hat
  4. 2026-10-29 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) +2 · Red Hat
  5. 2026-11-03 Fix available: RHSA-2026:94109 · Red Hat
  6. 2026-11-03 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4), Red Hat Enterprise Linux Real Time E4S (v.9.4) +1 · Red Hat
  7. 2026-11-03 Fix available: RHSA-2026:94477 · Red Hat
  8. 2026-11-03 Fix available: RHSA-2026:94438 · Red Hat
  9. 2026-11-03 Fix available: RHSA-2026:94558 · Red Hat
  10. 2026-11-03 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux AppStream EUS (v.9.6) +6 · Red Hat
  11. 2026-11-06 CISA SSVC decision points changed

References

Patch 8

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences