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TI-2023-02031 Aliases CVE-2023-2163

Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

Priority MEDIUM 55CWE-682Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03635 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 19 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Affected products

No affected products listed by the sources yet.

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.3 to before 5.4.242; 5.5 to before 5.10.179; 5.11 to before 5.15.109; 5.16 to before 6.1.26; 6.2 to before 6.2.13VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.3 to before 5.4.242; 5.5 to before 5.10.179; 5.11 to before 5.15.109; 5.16 to before 6.1.26; 6.2 to before 6.2.13 Vulnerable ·Linux

Remediation

Red Hat 19 advisories

  • RHSA-2024:1306 Released 2024-03-13 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-5.14.0-70.93.1.rt21.165.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-5.14.0-70.93.1.rt21.165.el9_0 +9
  • RHSA-2024:1253 Released 2024-03-12 · Red Hat rating Important
    kernel live patch module security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kpatch-patch-5_14_0-70_64_1-1-6.el9_0, kpatch-patch-5_14_0-70_70_1-1-5.el9_0, kpatch-patch-5_14_0-70_75_1-1-4.el9_0 +2
  • RHSA-2024:1250 Released 2024-03-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.93.2.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.93.2.el9_0, kernel-debug-devel-matched-5.14.0-70.93.2.el9_0, kernel-devel-5.14.0-70.93.2.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.93.2.el9_0, kernel-5.14.0-70.93.2.el9_0, kernel-abi-stablelists-5.14.0-70.93.2.el9_0 +14
Show 16 more Red Hat advisories
  • RHSA-2024:0575 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.43.1.el8_8, kernel-4.18.0-477.43.1.el8_8, kernel-abi-stablelists-4.18.0-477.43.1.el8_8 +19
  • RHSA-2024:0593 Released 2024-01-30 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) kpatch-patch-4_18_0-305_103_1-1-3.el8_4, kpatch-patch-4_18_0-305_108_1-1-2.el8_4, kpatch-patch-4_18_0-305_114_1-1-1.el8_4 +1
  • RHSA-2024:0562 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
  • RHSA-2024:0563 Released 2024-01-30 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4 +9
    • Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4 +7
  • RHSA-2024:0554 Released 2024-01-30 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) kpatch-patch-4_18_0-477_21_1-1-3.el8_8, kpatch-patch-4_18_0-477_27_1-1-2.el8_8, kpatch-patch-4_18_0-477_36_1-1-1.el8_8
  • RHSA-2024:0403 Released 2024-01-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.120.1.el8_2, kernel-4.18.0-193.120.1.el8_2, kernel-abi-whitelists-4.18.0-193.120.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) bpftool-4.18.0-193.120.1.el8_2, kernel-4.18.0-193.120.1.el8_2, kernel-abi-whitelists-4.18.0-193.120.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) bpftool-4.18.0-193.120.1.el8_2, kernel-4.18.0-193.120.1.el8_2, kernel-abi-whitelists-4.18.0-193.120.1.el8_2 +14
  • RHSA-2024:0402 Released 2024-01-25 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt-4.18.0-193.120.1.rt13.171.el8_2, kernel-rt-core-4.18.0-193.120.1.rt13.171.el8_2, kernel-rt-debug-4.18.0-193.120.1.rt13.171.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt-4.18.0-193.120.1.rt13.171.el8_2, kernel-rt-core-4.18.0-193.120.1.rt13.171.el8_2, kernel-rt-debug-4.18.0-193.120.1.rt13.171.el8_2 +9
  • RHSA-2024:0448 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.48.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.48.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.48.1.el9_2, kernel-64k-devel-5.14.0-284.48.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.48.1.el9_2, kernel-5.14.0-284.48.1.el9_2, kernel-64k-5.14.0-284.48.1.el9_2 +29
  • RHSA-2024:0439 Released 2024-01-25 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +11
  • RHSA-2024:0412 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.87.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.87.1.el8_6, kernel-4.18.0-372.87.1.el8_6, kernel-abi-stablelists-4.18.0-372.87.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.87.1.el8_6, perf-4.18.0-372.87.1.el8_6
  • RHSA-2024:0381 Released 2024-01-23 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) kpatch-patch-5_14_0-284_18_1-1-6.el9_2, kpatch-patch-5_14_0-284_25_1-1-5.el9_2, kpatch-patch-5_14_0-284_30_1-1-2.el9_2 +1
  • RHSA-2024:0378 Released 2024-01-23 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) kpatch-patch-4_18_0-372_64_1-1-4.el8_6, kpatch-patch-4_18_0-372_70_1-1-3.el8_6, kpatch-patch-4_18_0-372_75_1-1-2.el8_6 +1
  • RHSA-2024:0376 Released 2024-01-23 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) kpatch-patch-4_18_0-193_109_1-1-4.el8_2, kpatch-patch-4_18_0-193_113_1-1-3.el8_2, kpatch-patch-4_18_0-193_116_1-1-2.el8_2 +1
  • RHSA-2023:7554 Released 2023-11-28 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-513_5_1-1-1.el8_9
  • RHSA-2023:7549 Released 2023-11-28 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.9.1.el8_9
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.9.1.el8_9, kernel-4.18.0-513.9.1.el8_9, kernel-abi-stablelists-4.18.0-513.9.1.el8_9 +19
  • RHSA-2023:7548 Released 2023-11-28 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-4.18.0-513.9.1.rt7.311.el8_9 +9
    • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-4.18.0-513.9.1.rt7.311.el8_9 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2023:7549
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2024:0412
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2024:1250
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2024:1250
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:7549, RHSA-2023:7554
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2024:0403
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2024:0562
Red Hat Enterprise Linux BaseOS E4S (v. 8.2)Fixed RHSA-2024:0376, RHSA-2024:0403
Red Hat Enterprise Linux BaseOS E4S (v.8.4)Fixed RHSA-2024:0562, RHSA-2024:0593
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2024:0378, RHSA-2024:0412
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:0554, RHSA-2024:0575
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2024:1250, RHSA-2024:1253
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:0381, RHSA-2024:0448
Red Hat Enterprise Linux BaseOS TUS (v. 8.2)Fixed RHSA-2024:0403
Red Hat Enterprise Linux BaseOS TUS (v.8.4)Fixed RHSA-2024:0562
Red Hat Enterprise Linux NFV TUS (v.8.4)Fixed RHSA-2024:0563
Red Hat Enterprise Linux RT TUS (v.8.4)Fixed RHSA-2024:0563
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2024:1306
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux Real Time TUS (v. 8.2)Fixed RHSA-2024:0402
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2023:7548
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2024:1306
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2)Fixed RHSA-2024:0402
Red Hat Enterprise Linux for Real Time (v. 8)Fixed RHSA-2023:7548
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2024:0412
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-2163

References

Patch 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