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TI-2022-20739 Aliases CVE-2022-42703GHSA-c9fp-cj2q-cv72

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

Priority LOW 27CWE-416Published · 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: 26 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

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

Why it matters now

EPSS 0.0092 60th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial Red Hat: 9 advisoriesRed Hat: 26 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 5.19.7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.19.7 Vulnerable ·Linux

Remediation

Red Hat 9 advisories

  • 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-2023:3388 Released 2023-05-31 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.57.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.57.1.el8_6, kernel-4.18.0-372.57.1.el8_6, kernel-abi-stablelists-4.18.0-372.57.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.57.1.el8_6, perf-4.18.0-372.57.1.el8_6
Show 6 more Red Hat advisories
  • RHSA-2023:2951 Released 2023-05-16 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-477.10.1.el8_8, kernel-4.18.0-477.10.1.el8_8, kernel-abi-stablelists-4.18.0-477.10.1.el8_8 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-477.10.1.el8_8
  • RHSA-2023:2736 Released 2023-05-16 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core-4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-4.18.0-477.10.1.rt7.274.el8_8 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core-4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-4.18.0-477.10.1.rt7.274.el8_8 +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
  • RHSA-2023:1091 Released 2023-03-07 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.88.1.el7, kernel-3.10.0-1160.88.1.el7, kernel-abi-whitelists-3.10.0-1160.88.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.88.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.88.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.88.1.el7, kernel-3.10.0-1160.88.1.el7, kernel-abi-whitelists-3.10.0-1160.88.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.88.1.el7, kernel-tools-libs-devel-3.10.0-1160.88.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.88.1.el7, kernel-3.10.0-1160.88.1.el7, kernel-abi-whitelists-3.10.0-1160.88.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.88.1.el7
  • RHSA-2023:1092 Released 2023-03-07 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debug-3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debug-devel-3.10.0-1160.88.1.rt56.1233.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debug-3.10.0-1160.88.1.rt56.1233.el7, kernel-rt-debug-devel-3.10.0-1160.88.1.rt56.1233.el7 +7

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 CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2023:3388
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-2023:2951
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:2458
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2023:3388
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2023:4137
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2023:2951
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:2458
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2023:2736
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2023:2148
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2023:2736
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2023:2148
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2023:4138
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2023:4138
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2023:1091
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2023:1092
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2023:1092
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2023:3388

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-42703
  2. 2026-10-03 Alias added: GHSA-c9fp-cj2q-cv72

References

Exploit 2

Patch 3

  • 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