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TI-2026-31217 Aliases CVE-2026-43037GHSA-p2wf-qj6m-x5fg

ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

Priority MEDIUM 50CWE-121Published · Updated

Key facts

Attack vector
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: 55 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-121 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() Oskar Kjos reported the following problem. ip4ip6_err() calls icmp_send() on a cloned skb whose cb[] was written by the IPv6 receive path as struct inet6_skb_parm. icmp_send() passes IPCB(skb2) to __ip_options_echo(), which interprets that cb[] region as struct inet_skb_parm (IPv4). The layouts differ: inet6_skb_parm.nhoff at offset 14 overlaps inet_skb_parm.opt.rr, producing a non-zero rr value. __ip_options_echo() then reads optlen from attacker-controlled packet data at sptr[rr+1] and copies that many bytes into dopt->__data, a fixed 40-byte stack buffer (IP_OPTIONS_DATA_FIXED_SIZE). To fix this we clear skb2->cb[], as suggested by Oskar Kjos. Also add minimal IPv4 header validation (version == 4, ihl >= 5).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00688 52nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.253, 5.15.203, 6.1.168 +5Red Hat: 35 advisoriesRed Hat: 55 fixed, 2 without a fix

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

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.22 and later5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0Patch availableCNA
  • Linux VendorLinux Affected 2.6.22 and later Fixed in 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.22 to before 5.10.253; 5.11 to before 5.15.203; 5.16 to before 6.1.168; 6.2 to before 6.6.134; 6.7 to before 6.12.81; 6.13 to before 6.18.22; 6.19 to before 6.19.12VulnerableLinux
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:7.0:rc5:*:*:*:*:*:*7.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*7.0 rc6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.22 to before 5.10.253; 5.11 to before 5.15.203; 5.16 to before 6.1.168; 6.2 to before 6.6.134; 6.7 to before 6.12.81; 6.13 to before 6.18.22; 6.19 to before 6.19.12 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
  • cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* Versions 7.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* Versions 7.0 rc6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0

Red Hat 35 advisories

  • RHSA-2026:44232 Released 2026-07-28 · Red Hat rating Critical
    OpenShift Container Platform 4.22.7 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202607220526-0, rhcos-ppc64le-4.22.9.8.202607220526-0, rhcos-s390x-4.22.9.8.202607220526-0 +1
  • RHSA-2026:41236 Released 2026-07-17 · Red Hat rating Critical
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.155.1.rt56.1307.el7, kernel-rt-debug-3.10.0-1160.155.1.rt56.1307.el7, kernel-rt-debug-devel-3.10.0-1160.155.1.rt56.1307.el7 +4
  • RHSA-2026:34098 Released 2026-07-09 · Red Hat rating Critical
    OpenShift Container Platform 4.17.55 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202606250942-0, rhcos-ppc64le-417.94.202606250942-0, rhcos-s390x-417.94.202606250942-0 +1
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  • RHSA-2026:28962 Released 2026-07-06 · Red Hat rating Critical
    OpenShift Container Platform 4.15.66 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 rhcos-aarch64-415.92.202606200237-0, rhcos-ppc64le-415.92.202606200237-0, rhcos-s390x-415.92.202606200237-0 +1
  • RHSA-2026:28887 Released 2026-07-01 · Red Hat rating Critical
    OpenShift Container Platform 4.14.68 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 rhcos-aarch64-414.92.202606231112-0, rhcos-ppc64le-414.92.202606231112-0, rhcos-s390x-414.92.202606231112-0 +1
  • RHSA-2026:33486 Released 2026-06-30 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • NVIDIA for RHEL 10 kernel-6.12.0-231.12.el10nv, kernel-64k-6.12.0-231.12.el10nv, kernel-64k-core-6.12.0-231.12.el10nv +32
  • RHSA-2026:26542 Released 2026-06-25 · Red Hat rating Critical
    OpenShift Container Platform 4.13.68 bug fix and security update
    • Red Hat OpenShift Container Platform 4.13 rhcos-x86_64-413.92.202606160406-0
  • RHSA-2026:26528 Released 2026-06-25 · Red Hat rating Critical
    OpenShift Container Platform 4.12.92 bug fix and security update
    • Red Hat OpenShift Container Platform 4.12 rhcos-x86_64-412.86.202606140301-0
  • RHSA-2026:28749 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-553_109_1-1-4.el8_10, kpatch-patch-4_18_0-553_125_1-1-1.el8_10, kpatch-patch-4_18_0-553_53_1-1-11.el8_10 +2
  • RHSA-2026:28741 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-5_14_0-687_10_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-687_10_1-1-1.el9_8
  • RHSA-2026:28740 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kpatch-patch-5_14_0-570_116_1-1-1.el9_6, kpatch-patch-5_14_0-570_17_1-1-16.el9_6, kpatch-patch-5_14_0-570_39_1-1-7.el9_6 +2
  • RHSA-2026:28748 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_97_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) kpatch-patch-4_18_0-477_107_1-1-7.el8_8, kpatch-patch-4_18_0-477_120_1-1-6.el8_8, kpatch-patch-4_18_0-477_130_1-1-4.el8_8 +2
  • RHSA-2026:28750 Released 2026-06-24 · Red Hat rating Critical
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    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) kpatch-patch-5_14_0-284_117_1-1-14.el9_2, kpatch-patch-5_14_0-284_134_1-1-8.el9_2, kpatch-patch-5_14_0-284_148_1-1-6.el9_2 +2
  • RHSA-2026:28742 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-6_12_0-211_16_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 10) kpatch-patch-6_12_0-211_16_1-1-1.el10_2
  • RHSA-2026:28738 Released 2026-06-24 · Red Hat rating Critical
    kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) kpatch-patch-5_14_0-427_100_1-1-6.el9_4, kpatch-patch-5_14_0-427_113_1-1-4.el9_4, kpatch-patch-5_14_0-427_126_1-1-1.el9_4 +2
  • RHSA-2026:27729 Released 2026-06-22 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.153.1.el7, kernel-3.10.0-1160.153.1.el7, kernel-abi-whitelists-3.10.0-1160.153.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.153.1.el7, kernel-tools-libs-devel-3.10.0-1160.153.1.el7
  • RHSA-2026:27719 Released 2026-06-22 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) kernel-2.6.32-754.61.1.el6, kernel-abi-whitelists-2.6.32-754.61.1.el6, kernel-debug-2.6.32-754.61.1.el6 +7
    • Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION) python-perf-2.6.32-754.61.1.el6
  • RHSA-2026:25044 Released 2026-06-18 · Red Hat rating Important
    OpenShift Container Platform 4.16.64 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202606051757-0, rhcos-ppc64le-416.94.202606051757-0, rhcos-s390x-416.94.202606051757-0 +1
  • RHSA-2026:25181 Released 2026-06-17 · Red Hat rating Critical
    OpenShift Container Platform 4.18.44 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202606051320-0, rhcos-ppc64le-418.94.202606051320-0, rhcos-s390x-418.94.202606051320-0 +1
  • RHSA-2026:25200 Released 2026-06-17 · Red Hat rating Critical
    OpenShift Container Platform 4.19.34 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202606100451-0, rhcos-ppc64le-4.19.9.6.202606100451-0, rhcos-s390x-4.19.9.6.202606100451-0 +1
  • RHSA-2026:26535 Released 2026-06-17 · Red Hat rating Critical
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  • RHSA-2026:25186 Released 2026-06-16 · Red Hat rating Critical
    OpenShift Container Platform 4.21.20 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 rhcos-aarch64-4.21.9.6.202606101139-0, rhcos-ppc64le-4.21.9.6.202606101139-0, rhcos-s390x-4.21.9.6.202606101139-0 +1
  • RHSA-2026:25193 Released 2026-06-16 · Red Hat rating Critical
    OpenShift Container Platform 4.20.25 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 rhcos-aarch64-4.20.9.6.202606101223-0, rhcos-ppc64le-4.20.9.6.202606101223-0, rhcos-s390x-4.20.9.6.202606101223-0 +1
  • RHSA-2026:25533 Released 2026-06-12 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.195.1.el8_6, kernel-4.18.0-372.195.1.el8_6, kernel-abi-stablelists-4.18.0-372.195.1.el8_6 +14
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    kernel security, bug fix, and enhancement update
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  • RHSA-2026:25217 Released 2026-06-11 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.15.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.15.1.el9_8, kernel-64k-devel-5.14.0-687.15.1.el9_8 +12
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    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.15.1.el9_8, kernel-rt-core-5.14.0-687.15.1.el9_8, kernel-rt-debug-5.14.0-687.15.1.el9_8 +9
  • RHSA-2026:25191 Released 2026-06-11 · Red Hat rating Critical
    kernel security update
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    kernel-rt security update
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    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-core-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-4.18.0-553.132.1.rt7.473.el8_10 +7
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    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.77.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.77.1.el10_0, kernel-64k-devel-6.12.0-55.77.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.77.1.el10_0, kernel-64k-6.12.0-55.77.1.el10_0, kernel-64k-core-6.12.0-55.77.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.77.1.el10_0, libperf-6.12.0-55.77.1.el10_0
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    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.77.1.el10_0, kernel-rt-core-6.12.0-55.77.1.el10_0, kernel-rt-debug-6.12.0-55.77.1.el10_0 +11
  • RHSA-2026:22964 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.145.1.el8_8, kernel-4.18.0-477.145.1.el8_8, kernel-abi-stablelists-4.18.0-477.145.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.145.1.el8_8, kernel-4.18.0-477.145.1.el8_8, kernel-abi-stablelists-4.18.0-477.145.1.el8_8 +14
  • RHSA-2026:23224 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.119.1.el9_6, libperf-5.14.0-570.119.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.119.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.119.1.el9_6, kernel-64k-devel-5.14.0-570.119.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.119.1.el9_6, kernel-64k-5.14.0-570.119.1.el9_6, kernel-64k-core-5.14.0-570.119.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.119.1.el9_6, kernel-rt-64k-5.14.0-570.119.1.el9_6, kernel-rt-64k-core-5.14.0-570.119.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.119.1.el9_6, kernel-rt-core-5.14.0-570.119.1.el9_6, kernel-rt-debug-5.14.0-570.119.1.el9_6 +11
  • RHSA-2026:23237 Released 2026-06-04 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.129.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.129.1.el9_4, kernel-64k-devel-5.14.0-427.129.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.129.1.el9_4, kernel-5.14.0-427.129.1.el9_4, kernel-64k-5.14.0-427.129.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.129.1.el9_4, kernel-rt-core-5.14.0-427.129.1.el9_4, kernel-rt-debug-5.14.0-427.129.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.129.1.el9_4, kernel-rt-core-5.14.0-427.129.1.el9_4, kernel-rt-debug-5.14.0-427.129.1.el9_4 +11
  • RHSA-2026:22940 Released 2026-06-03 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.174.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.174.1.el9_2, kernel-64k-devel-5.14.0-284.174.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.174.1.el9_2, kernel-5.14.0-284.174.1.el9_2, kernel-64k-5.14.0-284.174.1.el9_2 +29
  • RHSA-2026:22900 Released 2026-06-03 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.174.1.rt14.459.el9_2, kernel-rt-core-5.14.0-284.174.1.rt14.459.el9_2, kernel-rt-debug-5.14.0-284.174.1.rt14.459.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.174.1.rt14.459.el9_2, kernel-rt-core-5.14.0-284.174.1.rt14.459.el9_2, kernel-rt-debug-5.14.0-284.174.1.rt14.459.el9_2 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 5AffectedNo fix yet
NVIDIA for RHEL 10Fixed RHSA-2026:25534, RHSA-2026:33486
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:23224
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:22940
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:23237
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:24343
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:23224
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:25191, RHSA-2026:28742
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:25121, RHSA-2026:28749
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:25217, RHSA-2026:28741
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:25533
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:22964, RHSA-2026:28748
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:22940, RHSA-2026:28750
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:23237, RHSA-2026:28738
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:24343
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:23224, RHSA-2026:28740
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:25533
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:22964
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:25121
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:24343
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:25120
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:25120
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:22900
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:23237
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:24343
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:23224
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:22900
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:23237
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:24343
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:23224
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:27729
Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)Fixed RHSA-2026:27719
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:27729
Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)Fixed RHSA-2026:27719
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:41236
Red Hat OpenShift Container Platform 4.12Fixed RHSA-2026:26528
Red Hat OpenShift Container Platform 4.13Fixed RHSA-2026:26542
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:28887
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:28962
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:25044
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:34098
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:25181
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:25200
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:25193
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:25186
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:44232
Not affected: 1 product
  • Red Hat Enterprise Linux 10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43037
  2. 2026-10-03 Alias added: GHSA-p2wf-qj6m-x5fg
  3. 2026-10-09 Affected versions changed · Red Hat
  4. 2026-10-14 EPSS moved to the below the 50th percentile
  5. 2026-10-16 CISA SSVC decision points changed
  6. 2026-10-19 Weakness changed · CISA ADP
  7. 2026-10-25 EPSS moved to the 50th–90th percentile
  8. 2026-10-30 Affected versions changed · Red Hat

References

Patch 8

  • 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