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Fencer Vulns
high 8.1

CVE-2026-31613 json

smb: client: fix OOB reads parsing symlink error response

published 2026-04-24 6 mo ago modified 2026-10-19 20 d ago also EUVD-2026-25506

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix OOB reads parsing symlink error response

When a CREATE returns STATUS_STOPPED_ON_SYMLINK, smb2_check_message() returns success without any length validation, leaving the symlink parsers as the only defense against an untrusted server.

symlink_data() walks SMB 3.1.1 error contexts with the loop test "p < end", but reads p->ErrorId at offset 4 and p->ErrorDataLength at offset 0. When the server-controlled ErrorDataLength advances p to within 1-7 bytes of end, the next iteration will read past it. When the matching context is found, sym->SymLinkErrorTag is read at offset 4 from p->ErrorContextData with no check that the symlink header itself fits.

smb2_parse_symlink_response() then bounds-checks the substitute name using SMB2_SYMLINK_STRUCT_SIZE as the offset of PathBuffer from iov_base. That value is computed as sizeof(smb2_err_rsp) + sizeof(smb2_symlink_err_rsp), which is correct only when ErrorContextCount == 0.

With at least one error context the symlink data sits 8 bytes deeper, and each skipped non-matching context shifts it further by 8 + ALIGN(ErrorDataLength, 8). The check is too short, allowing the substitute name read to run past iov_len. The out-of-bound heap bytes are UTF-16-decoded into the symlink target and returned to userspace via readlink(2).

Fix this all up by making the loops test require the full context header to fit, rejecting sym if its header runs past end, and bound the substitute name against the actual position of sym->PathBuffer rather than a fixed offset.

Because sub_offs and sub_len are 16bits, the pointer math will not overflow here with the new greater-than.

Patch / fix

  • Linux Linux 6.1, 6.1.175, 6.6.141, 6.12.91, 6.18.24, 6.19.14, 7.0.1, 7.1
  • linux Debian 12 6.1.176-1
  • linux Debian 13 6.12.94-1
  • linux Debian 14 6.19.14-1

debian advisories DEBIAN-CVE-2026-31613

  • linux Ubuntu 24.04 LTS 6.8.0-136.136
  • linux Ubuntu 26.04 LTS 7.0.0-27.27
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1061.64
  • linux-aws Ubuntu 26.04 LTS 7.0.0-1008.8
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1064.72
  • linux-gcp Ubuntu 26.04 LTS 7.0.0-1007.7
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1059.67
  • linux-ibm Ubuntu 24.04 LTS 6.8.0-1061.62

ubuntu advisories UBUNTU-CVE-2026-31613

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 8 4.18.0-553.132.1.el8_10
  • perf RHEL 8 4.18.0-553.132.1.el8_10
  • bpftool RHEL 8 4.18.0-553.132.1.el8_10
  • kernel-core RHEL 8 4.18.0-553.132.1.el8_10
  • kernel-tools RHEL 8 4.18.0-553.132.1.el8_10
  • python3-perf RHEL 8 4.18.0-553.132.1.el8_10
  • kernel-modules RHEL 8 4.18.0-553.132.1.el8_10
  • kernel-zfcpdump RHEL 8 4.18.0-553.132.1.el8_10

red hat advisories RHSA-2026:77218RHSA-2026:52764RHSA-2026:47633RHSA-2026:44385RHSA-2026:40760RHSA-2026:40068

  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-48.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-48.1
  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.172.2
  • kernel-syms SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.172.1
  • kernel-source SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.172.2
  • kernel-default SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +3 more 5.14.21-150500.55.172.2
  • kernel-obs-build SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.172.2
  • kernel-default-base SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.172.2.150500.6.81.2

suse advisories SUSE-SU-2026:22433-1SUSE-SU-2026:22458-1SUSE-SU-2026:2658-1SUSE-SU-2026:2638-1SUSE-SU-2026:2631-1SUSE-SU-2026:2630-1

  • kernel-source openSUSE Tumbleweed 7.0.3-1.1

opensuse advisories openSUSE-SU-2026:10703-1

  • kernel-rt AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-core AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-modules AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel-rt-debug-modules-extra AlmaLinux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel AlmaLinux 8 4.18.0-553.132.1.el8_10

almalinux advisories ALSA-2026:25120ALSA-2026:25121ALSA-2026:24381ALSA-2026:23329

  • kernel Rocky Linux 8 4.18.0-553.132.1.el8_10.cloud.0.1
  • kernel-rt Rocky Linux 8 4.18.0-553.132.1.rt7.473.el8_10
  • kernel Rocky Linux 8 4.18.0-553.132.1.el8_10

rocky linux advisories RXSA-2026:25121RLSA-2026:25120RLSA-2026:25121

  • kernel Azure Linux 3.0 6.6.141.1-1

azure linux advisories AZL-83774

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-31613 updated cvss 7.1

kernel: smb: client: fix OOB reads parsing symlink error response

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.129.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.129.1.el9_6
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-687.13.1.el9_8, perf 5.14.0-687.13.1.el9_8, rtla 5.14.0-687.13.1.el9_8, python3-perf 5.14.0-687.13.1.el9_8, kernel-devel-matched 5.14.0-687.13.1.el9_8, kernel-64k-devel-matched 5.14.0-687.13.1.el9_8, +7 more
    fixed: vendor fix RHSA-2026:24381
  • Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-211.20.1.el10_2, perf 6.12.0-211.20.1.el10_2, rtla 6.12.0-211.20.1.el10_2, python3-perf 6.12.0-211.20.1.el10_2, kernel-devel-matched 6.12.0-211.20.1.el10_2, kernel-64k-devel-matched 6.12.0-211.20.1.el10_2, +7 more
    fixed: vendor fix RHSA-2026:23329
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.154.1.el9_4, perf 5.14.0-427.154.1.el9_4, rtla 5.14.0-427.154.1.el9_4, kernel-devel-matched 5.14.0-427.154.1.el9_4, kernel-64k-devel-matched 5.14.0-427.154.1.el9_4, kernel-debug-devel-matched 5.14.0-427.154.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:77218
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.95.1.el10_0, perf 6.12.0-55.95.1.el10_0, rtla 6.12.0-55.95.1.el10_0, python3-perf 6.12.0-55.95.1.el10_0, kernel-devel-matched 6.12.0-55.95.1.el10_0, kernel-64k-devel-matched 6.12.0-55.95.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:52764
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.129.1.el9_6, perf 5.14.0-570.129.1.el9_6, rtla 5.14.0-570.129.1.el9_6, python3-perf 5.14.0-570.129.1.el9_6, kernel-devel-matched 5.14.0-570.129.1.el9_6, kernel-64k-devel-matched 5.14.0-570.129.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.132.1.el8_10, kernel 4.18.0-553.132.1.el8_10, bpftool 4.18.0-553.132.1.el8_10, kernel-core 4.18.0-553.132.1.el8_10, kernel-tools 4.18.0-553.132.1.el8_10, python3-perf 4.18.0-553.132.1.el8_10, +15 more
    fixed: vendor fix RHSA-2026:25121
show 28 more
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-687.13.1.el9_8, kernel-64k 5.14.0-687.13.1.el9_8, kernel-core 5.14.0-687.13.1.el9_8, kernel-tools 5.14.0-687.13.1.el9_8, kernel-modules 5.14.0-687.13.1.el9_8, kernel-64k-core 5.14.0-687.13.1.el9_8, +27 more
    fixed: vendor fix RHSA-2026:24381
  • Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-211.20.1.el10_2, kernel-64k 6.12.0-211.20.1.el10_2, kernel-core 6.12.0-211.20.1.el10_2, kernel-tools 6.12.0-211.20.1.el10_2, kernel-modules 6.12.0-211.20.1.el10_2, kernel-64k-core 6.12.0-211.20.1.el10_2, +28 more
    fixed: vendor fix RHSA-2026:23329
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.199.1.el8_4, kernel 4.18.0-305.199.1.el8_4, bpftool 4.18.0-305.199.1.el8_4, kernel-core 4.18.0-305.199.1.el8_4, kernel-tools 4.18.0-305.199.1.el8_4, python3-perf 4.18.0-305.199.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47633
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.201.1.el8_6, kernel 4.18.0-372.201.1.el8_6, bpftool 4.18.0-372.201.1.el8_6, kernel-core 4.18.0-372.201.1.el8_6, kernel-tools 4.18.0-372.201.1.el8_6, python3-perf 4.18.0-372.201.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:40068
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.152.1.el8_8, kernel 4.18.0-477.152.1.el8_8, bpftool 4.18.0-477.152.1.el8_8, kernel-core 4.18.0-477.152.1.el8_8, kernel-tools 4.18.0-477.152.1.el8_8, python3-perf 4.18.0-477.152.1.el8_8, +9 more
    fixed: vendor fix RHSA-2026:40760
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.154.1.el9_4, kernel 5.14.0-427.154.1.el9_4, kernel-64k 5.14.0-427.154.1.el9_4, kernel-core 5.14.0-427.154.1.el9_4, kernel-tools 5.14.0-427.154.1.el9_4, python3-perf 5.14.0-427.154.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:77218
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.95.1.el10_0, kernel-64k 6.12.0-55.95.1.el10_0, kernel-core 6.12.0-55.95.1.el10_0, kernel-tools 6.12.0-55.95.1.el10_0, kernel-modules 6.12.0-55.95.1.el10_0, kernel-64k-core 6.12.0-55.95.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:52764
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.129.1.el9_6, kernel-64k 5.14.0-570.129.1.el9_6, kernel-core 5.14.0-570.129.1.el9_6, kernel-tools 5.14.0-570.129.1.el9_6, kernel-modules 5.14.0-570.129.1.el9_6, kernel-64k-core 5.14.0-570.129.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.199.1.el8_4, kernel 4.18.0-305.199.1.el8_4, bpftool 4.18.0-305.199.1.el8_4, kernel-core 4.18.0-305.199.1.el8_4, kernel-tools 4.18.0-305.199.1.el8_4, python3-perf 4.18.0-305.199.1.el8_4, +8 more
    fixed: vendor fix RHSA-2026:47633
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) perf 4.18.0-372.201.1.el8_6, kernel 4.18.0-372.201.1.el8_6, bpftool 4.18.0-372.201.1.el8_6, kernel-core 4.18.0-372.201.1.el8_6, kernel-tools 4.18.0-372.201.1.el8_6, python3-perf 4.18.0-372.201.1.el8_6, +8 more
    fixed: vendor fix RHSA-2026:40068
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.152.1.el8_8, kernel 4.18.0-477.152.1.el8_8, bpftool 4.18.0-477.152.1.el8_8, kernel-core 4.18.0-477.152.1.el8_8, kernel-tools 4.18.0-477.152.1.el8_8, python3-perf 4.18.0-477.152.1.el8_8, +8 more
    fixed: vendor fix RHSA-2026:40760
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-687.13.1.el9_8, kernel-debuginfo-common-s390x 5.14.0-687.13.1.el9_8, kernel-debuginfo-common-x86_64 5.14.0-687.13.1.el9_8, kernel-debuginfo-common-aarch64 5.14.0-687.13.1.el9_8, kernel-debuginfo-common-ppc64le 5.14.0-687.13.1.el9_8
    fixed: vendor fix RHSA-2026:24381
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-211.20.1.el10_2, kernel-debuginfo-common-s390x 6.12.0-211.20.1.el10_2, kernel-debuginfo-common-x86_64 6.12.0-211.20.1.el10_2, kernel-debuginfo-common-aarch64 6.12.0-211.20.1.el10_2, kernel-debuginfo-common-ppc64le 6.12.0-211.20.1.el10_2
    fixed: vendor fix RHSA-2026:23329
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.95.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.95.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.95.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.95.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.95.1.el10_0
    fixed: vendor fix RHSA-2026:52764
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.132.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.132.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.132.1.el8_10
    fixed: vendor fix RHSA-2026:25121
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-kvm 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-modules 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-kvm 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-core 4.18.0-553.132.1.rt7.473.el8_10, +4 more
    fixed: vendor fix RHSA-2026:25120
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-687.13.1.el9_8, kernel-rt-64k 5.14.0-687.13.1.el9_8, kernel-rt-core 5.14.0-687.13.1.el9_8, kernel-rt-modules 5.14.0-687.13.1.el9_8, kernel-rt-64k-core 5.14.0-687.13.1.el9_8, kernel-rt-debug-core 5.14.0-687.13.1.el9_8, +14 more
    fixed: vendor fix RHSA-2026:24381
  • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-211.20.1.el10_2, kernel-rt-64k 6.12.0-211.20.1.el10_2, kernel-rt-core 6.12.0-211.20.1.el10_2, kernel-rt-modules 6.12.0-211.20.1.el10_2, kernel-rt-64k-core 6.12.0-211.20.1.el10_2, kernel-rt-debug-core 6.12.0-211.20.1.el10_2, +14 more
    fixed: vendor fix RHSA-2026:23329
  • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.154.1.el9_4, kernel-rt-core 5.14.0-427.154.1.el9_4, kernel-rt-modules 5.14.0-427.154.1.el9_4, kernel-rt-debug-core 5.14.0-427.154.1.el9_4, kernel-rt-modules-core 5.14.0-427.154.1.el9_4, kernel-rt-debug-modules 5.14.0-427.154.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:77218
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.95.1.el10_0, kernel-rt-64k 6.12.0-55.95.1.el10_0, kernel-rt-core 6.12.0-55.95.1.el10_0, kernel-rt-modules 6.12.0-55.95.1.el10_0, kernel-rt-64k-core 6.12.0-55.95.1.el10_0, kernel-rt-debug-core 6.12.0-55.95.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:52764
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.129.1.el9_6, kernel-rt-64k 5.14.0-570.129.1.el9_6, kernel-rt-core 5.14.0-570.129.1.el9_6, kernel-rt-modules 5.14.0-570.129.1.el9_6, kernel-rt-64k-core 5.14.0-570.129.1.el9_6, kernel-rt-debug-core 5.14.0-570.129.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:44385
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-687.13.1.el9_8, kernel-rt-core 5.14.0-687.13.1.el9_8, kernel-rt-modules 5.14.0-687.13.1.el9_8, kernel-rt-debug-core 5.14.0-687.13.1.el9_8, kernel-rt-modules-core 5.14.0-687.13.1.el9_8, kernel-rt-debug-modules 5.14.0-687.13.1.el9_8, +4 more
    fixed: vendor fix RHSA-2026:24381
  • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-211.20.1.el10_2, kernel-rt-core 6.12.0-211.20.1.el10_2, kernel-rt-modules 6.12.0-211.20.1.el10_2, kernel-rt-debug-core 6.12.0-211.20.1.el10_2, kernel-rt-modules-core 6.12.0-211.20.1.el10_2, kernel-rt-debug-modules 6.12.0-211.20.1.el10_2, +4 more
    fixed: vendor fix RHSA-2026:23329
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.154.1.el9_4, kernel-rt-kvm 5.14.0-427.154.1.el9_4, kernel-rt-core 5.14.0-427.154.1.el9_4, kernel-rt-modules 5.14.0-427.154.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.154.1.el9_4, kernel-rt-debug-core 5.14.0-427.154.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:77218
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.95.1.el10_0, kernel-rt-kvm 6.12.0-55.95.1.el10_0, kernel-rt-core 6.12.0-55.95.1.el10_0, kernel-rt-modules 6.12.0-55.95.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.95.1.el10_0, kernel-rt-debug-core 6.12.0-55.95.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:52764
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.129.1.el9_6, kernel-rt-kvm 5.14.0-570.129.1.el9_6, kernel-rt-core 5.14.0-570.129.1.el9_6, kernel-rt-modules 5.14.0-570.129.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.129.1.el9_6, kernel-rt-debug-core 5.14.0-570.129.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:44385
  • 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-modules 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-core 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-modules 4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-modules-extra 4.18.0-553.132.1.rt7.473.el8_10, +2 more
    fixed: vendor fix RHSA-2026:25120
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-295-16 updated cvss 8.1

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
24 d ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.