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TI-2026-56013 Aliases CVE-2026-81000GHSA-32hf-vhcc-85c2

net: tun: bound receive headroom

Priority LOW 36Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 53 fixed, 2 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tun_get_user() uses tun->align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is larger than the usable space in a one-page skb head, SKB_MAX_HEAD(align) underflows and the result becomes negative when stored in good_linear. That value later wraps when assigned to the size_t linear variable, and tun_alloc_skb() can place skb->data outside the allocated head. Bound the headroom stored by TUN to the one-page skb-head budget and the largest non-sentinel 16-bit skb header offset. Leave one linear byte for raw TUN and a complete Ethernet header for TAP, including NET_IP_ALIGN. Also pull the raw-TUN protocol byte and the TAP Ethernet header before accessing them, so these checks remain safe for nonlinear skbs supplied by other allocation paths.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00357 29th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.270, 5.15.221, 6.1.188 +5Red Hat: 29 advisoriesRed Hat: 53 fixed, 2 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
LinuxLinux4.6 and later5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3Patch availableCNA
  • Linux VendorLinux Affected 4.6 and later Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3

Red Hat 29 advisories

  • RHSA-2026:95601 Released 2026-11-05 · Red Hat rating Important
    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_161_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) kpatch-patch-4_18_0-477_107_1-1-18.el8_8, kpatch-patch-4_18_0-477_120_1-1-17.el8_8, kpatch-patch-4_18_0-477_130_1-1-15.el8_8 +2
  • RHSA-2026:95600 Released 2026-11-05 · Red Hat rating Important
    kpatch-patch-5_14_0-284_134_1, kpatch-patch-5_14_0-284_148_1, kpatch-patch-5_14_0-284_158_1, kpatch-patch-5_14_0-284_172_1, and kpatch-patch-5_14_0-284_188_1 security update
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) kpatch-patch-5_14_0-284_134_1-1-19.el9_2, kpatch-patch-5_14_0-284_148_1-1-17.el9_2, kpatch-patch-5_14_0-284_158_1-1-15.el9_2 +2
  • RHSA-2026:95587 Released 2026-11-05 · Red Hat rating Important
    kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_158_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_1-1-15.el8_10, kpatch-patch-4_18_0-553_125_1-1-12.el8_10, kpatch-patch-4_18_0-553_158_1-1-4.el8_10 +2
Show 26 more Red Hat advisories
  • RHSA-2026:82782 Released 2026-10-22 · Red Hat rating Important
    OpenShift Container Platform 4.14.76 bug fix and security update
    • Red Hat OpenShift Container Platform 4.14 rhcos-aarch64-414.92.202610091316-0, rhcos-ppc64le-414.92.202610091316-0, rhcos-s390x-414.92.202610091316-0 +1
  • RHSA-2026:82811 Released 2026-10-22 · Red Hat rating Important
    OpenShift Container Platform 4.15.70 bug fix and security update
    • Red Hat OpenShift Container Platform 4.15 rhcos-aarch64-415.92.202610081130-0, rhcos-ppc64le-415.92.202610081130-0, rhcos-s390x-415.92.202610081130-0 +1
  • RHSA-2026:77612 Released 2026-10-15 · Red Hat rating Important
    OpenShift Container Platform 4.16.73 bug fix and security update
    • Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202610010305-0, rhcos-ppc64le-416.94.202610010305-0, rhcos-s390x-416.94.202610010305-0 +1
  • RHSA-2026:77548 Released 2026-10-15 · Red Hat rating Important
    OpenShift Container Platform 4.17.59 bug fix and security update
    • Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202610010234-0, rhcos-ppc64le-417.94.202610010234-0, rhcos-s390x-417.94.202610010234-0 +1
  • RHSA-2026:77320 Released 2026-10-15 · Red Hat rating Important
    OpenShift Container Platform 4.13.72 bug fix and security update
    • Red Hat OpenShift Container Platform 4.13 rhcos-x86_64-413.92.202609302032-0
  • RHSA-2026:77315 Released 2026-10-15 · Red Hat rating Important
    OpenShift Container Platform 4.12.100 bug fix and security update
    • Red Hat OpenShift Container Platform 4.12 rhcos-x86_64-412.86.202609271242-0
  • RHSA-2026:79035 Released 2026-10-15 · Red Hat rating Important
    OpenShift Container Platform 4.18.57 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202610071505-0, rhcos-ppc64le-418.94.202610071505-0, rhcos-s390x-418.94.202610071505-0 +1
  • RHSA-2026:74433 Released 2026-10-07 · Red Hat rating Important
    OpenShift Container Platform 4.19.50 bug fix and security update
    • Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202609301701-0, rhcos-ppc64le-4.19.9.6.202609301701-0, rhcos-s390x-4.19.9.6.202609301701-0 +1
  • RHSA-2026:74377 Released 2026-10-06 · Red Hat rating Important
    OpenShift Container Platform 4.20.41 bug fix and security update
    • Red Hat OpenShift Container Platform 4.20 rhcos-aarch64-4.20.9.6.202609301206-0, rhcos-ppc64le-4.20.9.6.202609301206-0, rhcos-s390x-4.20.9.6.202609301206-0 +1
  • RHSA-2026:74428 Released 2026-10-06 · Red Hat rating Important
    OpenShift Container Platform 4.22.17 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 rhcos-aarch64-4.22.9.8.202609291947-0, rhcos-ppc64le-4.22.9.8.202609291947-0, rhcos-s390x-4.22.9.8.202609291947-0 +1
  • RHSA-2026:74379 Released 2026-10-06 · Red Hat rating Important
    OpenShift Container Platform 4.21.36 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 rhcos-aarch64-4.21.9.6.202609301133-0, rhcos-ppc64le-4.21.9.6.202609301133-0, rhcos-s390x-4.21.9.6.202609301133-0 +1
  • RHSA-2026:73788 Released 2026-09-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • NVIDIA for RHEL 10 kernel-6.12.0-259.27.el10nv, kernel-64k-6.12.0-259.27.el10nv, kernel-64k-core-6.12.0-259.27.el10nv +38
  • RHSA-2026:71687 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.164.1.el7, kernel-3.10.0-1160.164.1.el7, kernel-abi-whitelists-3.10.0-1160.164.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.164.1.el7, kernel-tools-libs-devel-3.10.0-1160.164.1.el7
  • RHSA-2026:71631 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.144.1.el9_6, libperf-5.14.0-570.144.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.144.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.144.1.el9_6, kernel-64k-devel-5.14.0-570.144.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.144.1.el9_6, kernel-64k-5.14.0-570.144.1.el9_6, kernel-64k-core-5.14.0-570.144.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.144.1.el9_6, kernel-rt-64k-5.14.0-570.144.1.el9_6, kernel-rt-64k-core-5.14.0-570.144.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.144.1.el9_6, kernel-rt-core-5.14.0-570.144.1.el9_6, kernel-rt-debug-5.14.0-570.144.1.el9_6 +11
  • RHSA-2026:71657 Released 2026-09-24 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.164.1.rt56.1316.el7, kernel-rt-debug-3.10.0-1160.164.1.rt56.1316.el7, kernel-rt-debug-devel-3.10.0-1160.164.1.rt56.1316.el7 +4
  • RHSA-2026:71599 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.107.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.107.1.el10_0, kernel-64k-devel-6.12.0-55.107.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.107.1.el10_0, kernel-64k-6.12.0-55.107.1.el10_0, kernel-64k-core-6.12.0-55.107.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.107.1.el10_0, libperf-6.12.0-55.107.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.107.1.el10_0, kernel-rt-64k-6.12.0-55.107.1.el10_0, kernel-rt-64k-core-6.12.0-55.107.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.107.1.el10_0, kernel-rt-core-6.12.0-55.107.1.el10_0, kernel-rt-debug-6.12.0-55.107.1.el10_0 +11
  • RHSA-2026:71569 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.152.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.152.1.el9_4, kernel-64k-devel-5.14.0-427.152.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.152.1.el9_4, kernel-5.14.0-427.152.1.el9_4, kernel-64k-5.14.0-427.152.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.152.1.el9_4, kernel-rt-core-5.14.0-427.152.1.el9_4, kernel-rt-debug-5.14.0-427.152.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.152.1.el9_4, kernel-rt-core-5.14.0-427.152.1.el9_4, kernel-rt-debug-5.14.0-427.152.1.el9_4 +11
  • RHSA-2026:71601 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.194.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.194.1.el9_2, kernel-64k-devel-5.14.0-284.194.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.194.1.el9_2, kernel-5.14.0-284.194.1.el9_2, kernel-64k-5.14.0-284.194.1.el9_2 +29
  • RHSA-2026:71594 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.170.1.el8_8, kernel-4.18.0-477.170.1.el8_8, kernel-abi-stablelists-4.18.0-477.170.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.170.1.el8_8, kernel-4.18.0-477.170.1.el8_8, kernel-abi-stablelists-4.18.0-477.170.1.el8_8 +14
  • RHSA-2026:71606 Released 2026-09-24 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.194.1.rt14.479.el9_2, kernel-rt-core-5.14.0-284.194.1.rt14.479.el9_2, kernel-rt-debug-5.14.0-284.194.1.rt14.479.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.194.1.rt14.479.el9_2, kernel-rt-core-5.14.0-284.194.1.rt14.479.el9_2, kernel-rt-debug-5.14.0-284.194.1.rt14.479.el9_2 +11
  • RHSA-2026:71592 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.218.1.el8_6, kernel-4.18.0-372.218.1.el8_6, kernel-abi-stablelists-4.18.0-372.218.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.218.1.el8_6, kernel-4.18.0-372.218.1.el8_6, kernel-abi-stablelists-4.18.0-372.218.1.el8_6 +19
  • RHSA-2026:71565 Released 2026-09-24 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.209.1.el8_4, kernel-4.18.0-305.209.1.el8_4, kernel-abi-stablelists-4.18.0-305.209.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.209.1.el8_4, kernel-4.18.0-305.209.1.el8_4, kernel-abi-stablelists-4.18.0-305.209.1.el8_4 +19
  • RHSA-2026:71232 Released 2026-09-24 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.51.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.51.1.el9_8, kernel-64k-devel-5.14.0-687.51.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.51.1.el9_8, kernel-64k-5.14.0-687.51.1.el9_8, kernel-64k-core-5.14.0-687.51.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.51.1.el9_8, libperf-5.14.0-687.51.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.51.1.el9_8, kernel-rt-64k-5.14.0-687.51.1.el9_8, kernel-rt-64k-core-5.14.0-687.51.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.51.1.el9_8, kernel-rt-core-5.14.0-687.51.1.el9_8, kernel-rt-debug-5.14.0-687.51.1.el9_8 +9
  • RHSA-2026:71233 Released 2026-09-24 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.59.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.59.1.el10_2, kernel-64k-devel-6.12.0-211.59.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.59.1.el10_2, kernel-64k-6.12.0-211.59.1.el10_2, kernel-64k-core-6.12.0-211.59.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.59.1.el10_2, libperf-6.12.0-211.59.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.59.1.el10_2, kernel-rt-64k-6.12.0-211.59.1.el10_2, kernel-rt-64k-core-6.12.0-211.59.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.59.1.el10_2, kernel-rt-core-6.12.0-211.59.1.el10_2, kernel-rt-debug-6.12.0-211.59.1.el10_2 +9
  • RHSA-2026:71213 Released 2026-09-24 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.167.1.el8_10, kernel-4.18.0-553.167.1.el8_10, kernel-abi-stablelists-4.18.0-553.167.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.167.1.el8_10
  • RHSA-2026:71016 Released 2026-09-23 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.167.1.rt7.508.el8_10, kernel-rt-core-4.18.0-553.167.1.rt7.508.el8_10, kernel-rt-debug-4.18.0-553.167.1.rt7.508.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.167.1.rt7.508.el8_10, kernel-rt-core-4.18.0-553.167.1.rt7.508.el8_10, kernel-rt-debug-4.18.0-553.167.1.rt7.508.el8_10 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
NVIDIA for RHEL 10Fixed RHSA-2026:73788
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:71631
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:71233
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:71232
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:71601
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:71569
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:71599
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:71631
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:71233
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:71213, RHSA-2026:95587
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:71232
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:71565
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:71592
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:71594, RHSA-2026:95601
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:71601, RHSA-2026:95600
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:71569
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:71599
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:71631
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:71565
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:71592
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:71594
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:71213
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:71233
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:71232
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:71599
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:71016
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:71016
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:71233
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:71232
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:71606
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:71569
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:71599
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:71631
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:71233
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:71232
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:71606
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:71569
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:71599
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:71631
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:71687
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:71687
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:71657
Red Hat OpenShift Container Platform 4.12Fixed RHSA-2026:77315
Red Hat OpenShift Container Platform 4.13Fixed RHSA-2026:77320
Red Hat OpenShift Container Platform 4.14Fixed RHSA-2026:82782
Red Hat OpenShift Container Platform 4.15Fixed RHSA-2026:82811
Red Hat OpenShift Container Platform 4.16Fixed RHSA-2026:77612
Red Hat OpenShift Container Platform 4.17Fixed RHSA-2026:77548
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:79035
Red Hat OpenShift Container Platform 4.19Fixed RHSA-2026:74433
Red Hat OpenShift Container Platform 4.20Fixed RHSA-2026:74377
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:74379
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:74428
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81000
  2. 2026-10-03 Alias added: GHSA-32hf-vhcc-85c2
  3. 2026-10-07 Fix available: RHSA-2026:74377 · Red Hat
  4. 2026-10-07 Fix available: RHSA-2026:74428 · Red Hat
  5. 2026-10-07 Fix available: RHSA-2026:74379 · Red Hat
  6. 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.20, Red Hat OpenShift Container Platform 4.21, Red Hat OpenShift Container Platform 4.22 · Red Hat
  7. 2026-10-07 Fix available: RHSA-2026:74433 · Red Hat
  8. 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.19 · Red Hat
  9. 2026-10-16 Fix available: RHSA-2026:77315 · Red Hat
  10. 2026-10-16 Fix available: RHSA-2026:77548 · Red Hat
  11. 2026-10-16 Fix available: RHSA-2026:77320 · Red Hat
  12. 2026-10-16 Fix available: RHSA-2026:77612 · Red Hat
  13. 2026-10-16 Fix available: RHSA-2026:79035 · Red Hat
  14. 2026-10-16 Fix available: Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.16 +2 · Red Hat
  15. 2026-10-18 CISA SSVC decision points changed
  16. 2026-10-19 Fix available: Linux/[email protected] · CNA
  17. 2026-10-23 Fix available: RHSA-2026:82782 · Red Hat
  18. 2026-10-23 Fix available: RHSA-2026:82811 · Red Hat
  19. 2026-10-23 Fix available: Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15 · Red Hat
  20. 2026-10-30 Affected versions changed · Red Hat
  21. 2026-11-05 Affected versions changed · Red Hat
  22. 2026-11-06 Affected versions changed · Red Hat
  23. 2026-11-06 Fix available: RHSA-2026:95587 · Red Hat
  24. 2026-11-06 Fix available: RHSA-2026:95601 · Red Hat
  25. 2026-11-06 Fix available: RHSA-2026:95600 · Red Hat

References

Other 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-2021-02452 Incorrect authorization in Ubuntu linux kernel 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
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences