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TI-2026-23966 Aliases CVE-2026-31408GHSA-82h6-xw4j-pq2m

Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold

Priority MEDIUM 40CWE-416Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 38 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a reference to the socket. A concurrent close() can free the socket between the lock release and the subsequent sk->sk_state access, resulting in a use-after-free. Other functions in the same file (sco_sock_timeout(), sco_conn_del()) correctly use sco_sock_hold() to safely hold a reference under the lock. Fix by using sco_sock_hold() to take a reference before releasing the lock, and adding sock_put() on all exit paths.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00322 25th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.265, 5.15.203, 6.1.168 +5Red Hat: 12 advisoriesRed Hat: 38 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.12 and later5.10.265, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0Patch availableCNA
  • Linux VendorLinux Affected 2.6.12 and later Fixed in 5.10.265, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0 Patch available CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.12.1 to before 5.15.203; 5.16 to before 6.1.168; 6.2 to before 6.6.131; 6.7 to before 6.12.80; 6.13 to before 6.18.21; 6.19 to before 6.19.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*2.6.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*2.6.12 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*2.6.12 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*2.6.12 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*2.6.12 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*7.0 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*7.0 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*7.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*7.0 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.12.1 to before 5.15.203; 5.16 to before 6.1.168; 6.2 to before 6.6.131; 6.7 to before 6.12.80; 6.13 to before 6.18.21; 6.19 to before 6.19.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* Versions 2.6.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* Versions 2.6.12 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* Versions 2.6.12 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* Versions 2.6.12 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* Versions 2.6.12 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* Versions 7.0 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* Versions 7.0 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* Versions 7.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* Versions 7.0 rc4 Vulnerable ·Linux
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*7.0 rc5VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* Versions 7.0 rc5 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.265, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0

Red Hat 12 advisories

  • RHSA-2026:40760 Released 2026-07-16 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.152.1.el8_8, kernel-4.18.0-477.152.1.el8_8, kernel-abi-stablelists-4.18.0-477.152.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.152.1.el8_8, kernel-4.18.0-477.152.1.el8_8, kernel-abi-stablelists-4.18.0-477.152.1.el8_8 +14
  • RHSA-2026:39371 Released 2026-07-14 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.88.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.88.1.el10_0, kernel-64k-devel-6.12.0-55.88.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.88.1.el10_0, kernel-64k-6.12.0-55.88.1.el10_0, kernel-64k-core-6.12.0-55.88.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.88.1.el10_0, libperf-6.12.0-55.88.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.88.1.el10_0, kernel-rt-64k-6.12.0-55.88.1.el10_0, kernel-rt-64k-core-6.12.0-55.88.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.88.1.el10_0, kernel-rt-core-6.12.0-55.88.1.el10_0, kernel-rt-debug-6.12.0-55.88.1.el10_0 +11
  • RHSA-2026:38902 Released 2026-07-13 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.127.1.el9_6, libperf-5.14.0-570.127.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.127.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.127.1.el9_6, kernel-64k-devel-5.14.0-570.127.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.127.1.el9_6, kernel-64k-5.14.0-570.127.1.el9_6, kernel-64k-core-5.14.0-570.127.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.127.1.el9_6, kernel-rt-64k-5.14.0-570.127.1.el9_6, kernel-rt-64k-core-5.14.0-570.127.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.127.1.el9_6, kernel-rt-core-5.14.0-570.127.1.el9_6, kernel-rt-debug-5.14.0-570.127.1.el9_6 +11
Show 9 more Red Hat advisories
  • RHSA-2026:36767 Released 2026-07-08 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.136.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.136.1.el9_4, kernel-64k-devel-5.14.0-427.136.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.136.1.el9_4, kernel-5.14.0-427.136.1.el9_4, kernel-64k-5.14.0-427.136.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.136.1.el9_4, kernel-rt-core-5.14.0-427.136.1.el9_4, kernel-rt-debug-5.14.0-427.136.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.136.1.el9_4, kernel-rt-core-5.14.0-427.136.1.el9_4, kernel-rt-debug-5.14.0-427.136.1.el9_4 +11
  • RHSA-2026:36073 Released 2026-07-07 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.179.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.179.1.el9_2, kernel-64k-devel-5.14.0-284.179.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.179.1.el9_2, kernel-5.14.0-284.179.1.el9_2, kernel-64k-5.14.0-284.179.1.el9_2 +29
  • RHSA-2026:35904 Released 2026-07-06 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.179.1.rt14.464.el9_2, kernel-rt-core-5.14.0-284.179.1.rt14.464.el9_2, kernel-rt-debug-5.14.0-284.179.1.rt14.464.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.179.1.rt14.464.el9_2, kernel-rt-core-5.14.0-284.179.1.rt14.464.el9_2, kernel-rt-debug-5.14.0-284.179.1.rt14.464.el9_2 +11
  • RHSA-2026:35896 Released 2026-07-06 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.197.1.el8_4, kernel-4.18.0-305.197.1.el8_4, kernel-abi-stablelists-4.18.0-305.197.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.197.1.el8_4, kernel-4.18.0-305.197.1.el8_4, kernel-abi-stablelists-4.18.0-305.197.1.el8_4 +14
  • RHSA-2026:35894 Released 2026-07-06 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.199.1.el8_6, kernel-4.18.0-372.199.1.el8_6, kernel-abi-stablelists-4.18.0-372.199.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.199.1.el8_6, kernel-4.18.0-372.199.1.el8_6, kernel-abi-stablelists-4.18.0-372.199.1.el8_6 +14
  • RHSA-2026:21745 Released 2026-05-28 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-4.18.0-553.126.1.rt7.467.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-core-4.18.0-553.126.1.rt7.467.el8_10, kernel-rt-debug-4.18.0-553.126.1.rt7.467.el8_10 +7
  • RHSA-2026:21706 Released 2026-05-28 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.126.1.el8_10, kernel-4.18.0-553.126.1.el8_10, kernel-abi-stablelists-4.18.0-553.126.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.126.1.el8_10
  • RHSA-2026:21556 Released 2026-05-28 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.12.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.12.1.el9_8, kernel-64k-devel-5.14.0-687.12.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.12.1.el9_8, kernel-64k-5.14.0-687.12.1.el9_8, kernel-64k-core-5.14.0-687.12.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.12.1.el9_8, libperf-5.14.0-687.12.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.12.1.el9_8, kernel-rt-64k-5.14.0-687.12.1.el9_8, kernel-rt-64k-core-5.14.0-687.12.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.12.1.el9_8, kernel-rt-core-5.14.0-687.12.1.el9_8, kernel-rt-debug-5.14.0-687.12.1.el9_8 +9
  • RHSA-2026:19569 Released 2026-05-20 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.16.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.16.1.el10_2, kernel-64k-devel-6.12.0-211.16.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.16.1.el10_2, kernel-64k-6.12.0-211.16.1.el10_2, kernel-64k-core-6.12.0-211.16.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.16.1.el10_2, libperf-6.12.0-211.16.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.16.1.el10_2, kernel-rt-64k-6.12.0-211.16.1.el10_2, kernel-rt-64k-core-6.12.0-211.16.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.16.1.el10_2, kernel-rt-core-6.12.0-211.16.1.el10_2, kernel-rt-debug-6.12.0-211.16.1.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 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:21556
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:36073
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:39371
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:21706
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:21556
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:35896
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:35894
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:40760
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:36073
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:39371
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:35896
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:35894
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:40760
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:21706
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:21556
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:39371
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:21745
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:21745
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:21556
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:35904
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:39371
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:21556
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:35904
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:39371
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:38902

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-31408
  2. 2026-10-03 Alias added: GHSA-82h6-xw4j-pq2m
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-16 Priority changed: LOW → MEDIUM
  5. 2026-10-19 Weakness changed · CISA ADP
  6. 2026-10-29 Affected versions changed · Red Hat

References

Patch 7

Other 1

  • 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