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TI-2022-20892 Aliases CVE-2022-42896GHSA-pvw8-76h2-7q32

Info Leak in l2cap_core in the Linux Kernel

Priority MEDIUM 45CWE-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: 41 fixed, 1 without a fix

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

Summary

There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit  https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02462 84th percentileScored 2026-11-07
Fix Partial Red Hat: 21 advisoriesRed Hat: 41 fixed, 1 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
LinuxLinux Kernel3.0.0 – 711f8c3fb3db61897080468586b970c87c61d9e4—No fix listedCNA
  • Linux Kernel VendorLinux Affected 3.0.0 – 711f8c3fb3db61897080468586b970c87c61d9e4 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 4.9.335; 4.10 to before 4.14.301; 4.15 to before 4.19.268; 4.20 to before 5.4.226; 5.5 to before 5.10.154; 5.11 to before 5.15.78; 5.16 to before 6.0.8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.9.335; 4.10 to before 4.14.301; 4.15 to before 4.19.268; 4.20 to before 5.4.226; 5.5 to before 5.10.154; 5.11 to before 5.15.78; 5.16 to before 6.0.8 Vulnerable ·Linux

Remediation

Red Hat 21 advisories

  • RHSA-2024:1746 Released 2024-04-10 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 7.7) bpftool-3.10.0-1062.87.1.el7, kernel-3.10.0-1062.87.1.el7, kernel-abi-whitelists-3.10.0-1062.87.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.7) kernel-tools-libs-devel-3.10.0-1062.87.1.el7
  • RHSA-2024:1332 Released 2024-03-14 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.114.2.rt56.1266.el7, kernel-rt-debug-3.10.0-1160.114.2.rt56.1266.el7, kernel-rt-debug-devel-3.10.0-1160.114.2.rt56.1266.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.114.2.rt56.1266.el7, kernel-rt-debug-3.10.0-1160.114.2.rt56.1266.el7, kernel-rt-debug-devel-3.10.0-1160.114.2.rt56.1266.el7 +7
  • RHSA-2024:1323 Released 2024-03-13 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server (v. 7) kpatch-patch-3_10_0-1160_102_1-1-3.el7, kpatch-patch-3_10_0-1160_105_1-1-2.el7, kpatch-patch-3_10_0-1160_108_1-1-1.el7 +1
Show 18 more Red Hat advisories
  • RHSA-2024:1249 Released 2024-03-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.114.2.el7, kernel-3.10.0-1160.114.2.el7, kernel-abi-whitelists-3.10.0-1160.114.2.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.114.2.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.114.2.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.114.2.el7, kernel-3.10.0-1160.114.2.el7, kernel-abi-whitelists-3.10.0-1160.114.2.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.114.2.el7, kernel-tools-libs-devel-3.10.0-1160.114.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.114.2.el7, kernel-3.10.0-1160.114.2.el7, kernel-abi-whitelists-3.10.0-1160.114.2.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.114.2.el7
  • RHSA-2024:0980 Released 2024-02-26 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 7.6) bpftool-3.10.0-957.111.1.el7, kernel-3.10.0-957.111.1.el7, kernel-abi-whitelists-3.10.0-957.111.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.111.1.el7
  • RHSA-2023:5589 Released 2023-10-10 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.116.1.el8_2, kernel-4.18.0-193.116.1.el8_2, kernel-abi-whitelists-4.18.0-193.116.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) bpftool-4.18.0-193.116.1.el8_2, kernel-4.18.0-193.116.1.el8_2, kernel-abi-whitelists-4.18.0-193.116.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) bpftool-4.18.0-193.116.1.el8_2, kernel-4.18.0-193.116.1.el8_2, kernel-abi-whitelists-4.18.0-193.116.1.el8_2 +14
  • RHSA-2023:5588 Released 2023-10-10 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt-4.18.0-193.116.1.rt13.167.el8_2, kernel-rt-core-4.18.0-193.116.1.rt13.167.el8_2, kernel-rt-debug-4.18.0-193.116.1.rt13.167.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt-4.18.0-193.116.1.rt13.167.el8_2, kernel-rt-core-4.18.0-193.116.1.rt13.167.el8_2, kernel-rt-debug-4.18.0-193.116.1.rt13.167.el8_2 +9
  • RHSA-2023:5580 Released 2023-10-10 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) kpatch-patch-4_18_0-193_100_1-1-4.el8_2, kpatch-patch-4_18_0-193_105_1-1-3.el8_2, kpatch-patch-4_18_0-193_109_1-1-2.el8_2 +1
  • RHSA-2023:4888 Released 2023-08-30 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) kpatch-patch-4_18_0-372_41_1-1-7.el8_6, kpatch-patch-4_18_0-372_46_1-1-5.el8_6, kpatch-patch-4_18_0-372_51_1-1-4.el8_6 +3
  • RHSA-2023:4789 Released 2023-08-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.70.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.70.1.el8_6, kernel-4.18.0-372.70.1.el8_6, kernel-abi-stablelists-4.18.0-372.70.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.70.1.el8_6, perf-4.18.0-372.70.1.el8_6
  • RHSA-2023:4517 Released 2023-08-08 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-477.21.1.el8_8, kernel-4.18.0-477.21.1.el8_8, kernel-abi-stablelists-4.18.0-477.21.1.el8_8 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-477.21.1.el8_8
  • RHSA-2023:4531 Released 2023-08-08 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-477_10_1-1-2.el8_8, kpatch-patch-4_18_0-477_13_1-1-1.el8_8, kpatch-patch-4_18_0-477_15_1-1-1.el8_8
  • RHSA-2023:4541 Released 2023-08-08 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-477.21.1.rt7.284.el8_8, kernel-rt-core-4.18.0-477.21.1.rt7.284.el8_8, kernel-rt-debug-4.18.0-477.21.1.rt7.284.el8_8 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-477.21.1.rt7.284.el8_8, kernel-rt-core-4.18.0-477.21.1.rt7.284.el8_8, kernel-rt-debug-4.18.0-477.21.1.rt7.284.el8_8 +7
  • RHSA-2023:4230 Released 2023-07-20 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kpatch-patch-5_14_0-70_36_1-1-6.el9_0, kpatch-patch-5_14_0-70_43_1-1-5.el9_0, kpatch-patch-5_14_0-70_49_1-1-4.el9_0 +3
  • RHSA-2023:4137 Released 2023-07-18 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.64.1.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.64.1.el9_0, kernel-debug-devel-matched-5.14.0-70.64.1.el9_0, kernel-devel-5.14.0-70.64.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.64.1.el9_0, kernel-5.14.0-70.64.1.el9_0, kernel-abi-stablelists-5.14.0-70.64.1.el9_0 +14
  • RHSA-2023:4138 Released 2023-07-18 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-5.14.0-70.64.1.rt21.135.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-core-5.14.0-70.64.1.rt21.135.el9_0, kernel-rt-debug-5.14.0-70.64.1.rt21.135.el9_0 +9
  • RHSA-2023:3517 Released 2023-06-06 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) kpatch-patch-4_18_0-305_71_1-1-5.el8_4, kpatch-patch-4_18_0-305_72_1-1-4.el8_4, kpatch-patch-4_18_0-305_76_1-1-3.el8_4 +3
  • RHSA-2023:3461 Released 2023-06-06 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.91.1.el8_4, kernel-4.18.0-305.91.1.el8_4, kernel-abi-stablelists-4.18.0-305.91.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) bpftool-4.18.0-305.91.1.el8_4, kernel-4.18.0-305.91.1.el8_4, kernel-abi-stablelists-4.18.0-305.91.1.el8_4 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.4) bpftool-4.18.0-305.91.1.el8_4, kernel-4.18.0-305.91.1.el8_4, kernel-abi-stablelists-4.18.0-305.91.1.el8_4 +14
  • RHSA-2023:3462 Released 2023-06-06 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV E4S (v.8.4) kernel-rt-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-core-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-debug-4.18.0-305.91.1.rt7.166.el8_4 +9
    • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-core-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-debug-4.18.0-305.91.1.rt7.166.el8_4 +9
    • Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-core-4.18.0-305.91.1.rt7.166.el8_4, kernel-rt-debug-4.18.0-305.91.1.rt7.166.el8_4 +7
  • RHSA-2023:2458 Released 2023-05-09 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-284.11.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.11.1.el9_2, kernel-64k-devel-5.14.0-284.11.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.0.0-284.11.1.el9_2, kernel-5.14.0-284.11.1.el9_2, kernel-64k-5.14.0-284.11.1.el9_2 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-284.11.1.el9_2
  • RHSA-2023:2148 Released 2023-05-09 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core-5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-5.14.0-284.11.1.rt14.296.el9_2 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core-5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-5.14.0-284.11.1.rt14.296.el9_2 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2023:4789
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2023:4137
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:2458
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2023:4137
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:4517, RHSA-2023:4531
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:2458
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2023:5589
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2023:3461
Red Hat Enterprise Linux BaseOS E4S (v. 8.2)Fixed RHSA-2023:5580, RHSA-2023:5589
Red Hat Enterprise Linux BaseOS E4S (v.8.4)Fixed RHSA-2023:3461, RHSA-2023:3517
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2023:4789, RHSA-2023:4888
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2023:4137, RHSA-2023:4230
Red Hat Enterprise Linux BaseOS TUS (v. 8.2)Fixed RHSA-2023:5589
Red Hat Enterprise Linux BaseOS TUS (v.8.4)Fixed RHSA-2023:3461
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2023:4517
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:2458
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2023:4541
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2023:2148
Red Hat Enterprise Linux NFV E4S (v.8.4)Fixed RHSA-2023:3462
Red Hat Enterprise Linux NFV TUS (v.8.4)Fixed RHSA-2023:3462
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2023:4541
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2023:2148
Red Hat Enterprise Linux RT TUS (v.8.4)Fixed RHSA-2023:3462
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2023:4138
Red Hat Enterprise Linux Real Time TUS (v. 8.2)Fixed RHSA-2023:5588
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2023:4138
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2)Fixed RHSA-2023:5588
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2024:1249, RHSA-2024:1323
Red Hat Enterprise Linux Server AUS (v. 7.6)Fixed RHSA-2024:0980
Red Hat Enterprise Linux Server AUS (v. 7.7)Fixed RHSA-2024:1746
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux Server Optional AUS (v. 7.6)Fixed RHSA-2024:0980
Red Hat Enterprise Linux Server Optional AUS (v. 7.7)Fixed RHSA-2024:1746
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2024:1249
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2024:1332
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2024:1332
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2023:4789

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-42896
  2. 2026-10-03 Alias added: GHSA-pvw8-76h2-7q32

References

Patch 2

  • 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