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TI-2022-00911 Aliases CVE-2022-1012

Memory leak in Kernel

Priority MEDIUM 43CWE-401Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.

Summary

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.

Why it matters now

EPSS 0.04391 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 11 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—KernelLinux kernel version prior to 5.18-rc6—No fix listedCNA
  • Kernel Vendor— Affected Linux kernel version prior to 5.18-rc6 Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 5.18VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*5.18VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*5.18 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*5.18 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*5.18 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*5.18 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*5.18 rc5VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.18 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:* Versions 5.18 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* Versions 5.18 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* Versions 5.18 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:* Versions 5.18 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:* Versions 5.18 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:* Versions 5.18 rc5 Vulnerable ·Linux

Remediation

Red Hat 11 advisories

  • RHSA-2022:6551 Released 2022-09-19 · Red Hat rating Important
    Red Hat Virtualization security update
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 redhat-virtualization-host-4.5.2-202209140405_8.6, redhat-virtualization-host-image-update-4.5.2-202209140405_8.6
  • RHSA-2022:5819 Released 2022-08-03 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-372.19.1.el8_6, kernel-4.18.0-372.19.1.el8_6, kernel-abi-stablelists-4.18.0-372.19.1.el8_6 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-372.19.1.el8_6
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.19.1.el8_6, perf-4.18.0-372.19.1.el8_6
  • RHSA-2022:5834 Released 2022-08-02 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-core-4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-4.18.0-372.19.1.rt7.176.el8_6 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-core-4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-4.18.0-372.19.1.rt7.176.el8_6 +7
Show 8 more Red Hat advisories
  • RHSA-2022:5626 Released 2022-07-19 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.4) bpftool-4.18.0-305.57.1.el8_4, kernel-4.18.0-305.57.1.el8_4, kernel-abi-stablelists-4.18.0-305.57.1.el8_4 +19
    • Red Hat Enterprise Linux CRB EUS (v.8.4) kernel-tools-libs-devel-4.18.0-305.57.1.el8_4
  • RHSA-2022:5633 Released 2022-07-19 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV EUS (v.8.4) kernel-rt-4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-core-4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-4.18.0-305.57.1.rt7.129.el8_4 +9
    • Red Hat Enterprise Linux RT EUS (v.8.4) kernel-rt-4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-core-4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-4.18.0-305.57.1.rt7.129.el8_4 +7
  • RHSA-2022:5636 Released 2022-07-19 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) bpftool-4.18.0-147.70.1.el8_1, kernel-4.18.0-147.70.1.el8_1, kernel-abi-whitelists-4.18.0-147.70.1.el8_1 +14
  • RHSA-2022:5249 Released 2022-07-01 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-70.17.1.el9_0
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-70.17.1.el9_0, kernel-debug-devel-matched-5.14.0-70.17.1.el9_0, kernel-devel-5.14.0-70.17.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-70.17.1.el9_0, kernel-5.14.0-70.17.1.el9_0, kernel-abi-stablelists-5.14.0-70.17.1.el9_0 +14
  • RHSA-2022:5220 Released 2022-06-28 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-tools-libs-devel-4.18.0-193.87.1.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) bpftool-4.18.0-193.87.1.el8_2, kernel-4.18.0-193.87.1.el8_2, kernel-abi-whitelists-4.18.0-193.87.1.el8_2 +19
  • RHSA-2022:5267 Released 2022-06-28 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-core-5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-5.14.0-70.17.1.rt21.89.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-core-5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-5.14.0-70.17.1.rt21.89.el9_0 +9
  • RHSA-2022:5224 Released 2022-06-28 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt-4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-core-4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-4.18.0-193.87.1.rt13.137.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt-4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-core-4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-4.18.0-193.87.1.rt13.137.el8_2 +9
  • RHSA-2022:5214 Released 2022-06-28 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-70_13_1-1-1.el9_0

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2022:5249
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2022:5220
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:5249
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2022:5819
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2022:5214, RHSA-2022:5249
Red Hat Enterprise Linux BaseOS E4S (v. 8.1)Fixed RHSA-2022:5636
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2022:5220
Red Hat Enterprise Linux BaseOS EUS (v.8.4)Fixed RHSA-2022:5626
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2022:5819
Red Hat Enterprise Linux CRB EUS (v.8.4)Fixed RHSA-2022:5626
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2022:5834
Red Hat Enterprise Linux NFV EUS (v.8.4)Fixed RHSA-2022:5633
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2022:5834
Red Hat Enterprise Linux RT EUS (v.8.4)Fixed RHSA-2022:5633
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2022:5267
Red Hat Enterprise Linux Real Time EUS (v. 8.2)Fixed RHSA-2022:5224
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2022:5267
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2)Fixed RHSA-2022:5224
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2022:5819, RHSA-2022:6551
Not affected: 3 products
  • RHEL 8-based RHEV-H for RHEV 4 (build requirements)
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-1012

References

Advisory 2

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