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Fencer Vulns
high 8.8

CVE-2024-26598 json

KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache

published 2024-02-23 2 y ago modified 2026-08-05 3 mo ago also EUVD-2024-23860

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

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

KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache

There is a potential UAF scenario in the case of an LPI translation cache hit racing with an operation that invalidates the cache, such as a DISCARD ITS command. The root of the problem is that vgic_its_check_cache() does not elevate the refcount on the vgic_irq before dropping the lock that serializes refcount changes.

Have vgic_its_check_cache() raise the refcount on the returned vgic_irq and add the corresponding decrement after queueing the interrupt.

Patch / fix

  • Linux Linux 5.4.269, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8
  • linux linux_kernel 5.4.269, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8, 12c2759ab134, 65b201bf3e9a, ad362fe07fec, ba7be6667408, d04acadb6490, dba788e25f05, dd3956a1b3dd
  • linux Debian 12 6.1.76-1
  • linux Debian 14, Debian 13 6.6.15-1

debian advisories DEBIAN-CVE-2024-26598

  • linux Ubuntu 20.04 LTS 5.4.0-181.201
  • linux Ubuntu 22.04 LTS 5.15.0-102.112
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1124.134
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1057.63
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1128.137
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1055.63
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1054.59
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1071.76

ubuntu advisories UBUNTU-CVE-2024-26598

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 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • perf RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • bpftool RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • kernel-core RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • kernel-tools RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • python3-perf RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • kernel-modules RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 4.18.0-372.126.1.el8_6
  • kernel-zfcpdump RHEL 8.6 E4S 4.18.0-372.126.1.el8_6

red hat advisories RHSA-2024:8161RHSA-2024:4740RHSA-2024:4415RHSA-2024:3854RHSA-2024:3855

  • kernel-rt SLE Micro 5.4, SLE Micro 5.3, openSUSE Leap Micro 5.4 +1 more 5.14.21-150400.15.71.1
  • kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.71.1
  • kernel-rt SLE Micro 5.5, Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-syms-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-rt_debug Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-source-rt SLE Micro 5.5, Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-syms SLE High Performance Computing 15 SP4-ESPOS, Manager Server 4.3, Manager Proxy 4.3 +3 more 5.14.21-150400.24.111.1
  • kernel-source SLE High Performance Computing 15 SP4-ESPOS, Manager Server 4.3, Manager Proxy 4.3 +3 more 5.14.21-150400.24.111.1

suse advisories SUSE-SU-2024:0977-1SUSE-SU-2024:0910-1SUSE-SU-2024:0900-2SUSE-SU-2024:0900-1SUSE-SU-2024:0858-1SUSE-SU-2024:0855-1

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-2024-26598 updated cvss 7.8

kernel: kvm: Avoid potential UAF in LPI translation cache

  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: workaround, no fix available “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.”
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.64.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.64.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.64.1.el8_8
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:4740
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.69.1.el9_2
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:3855
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.105.1.el9_0, kernel-devel-matched 5.14.0-70.105.1.el9_0, kernel-debug-devel-matched 5.14.0-70.105.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.105.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.105.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.105.1.el9_0, +2 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:4415
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.69.1.el9_2, rtla 5.14.0-284.69.1.el9_2, kernel-devel-matched 5.14.0-284.69.1.el9_2, kernel-64k-devel-matched 5.14.0-284.69.1.el9_2, kernel-debug-devel-matched 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, +5 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:3855
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +15 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:8161
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.105.1.el9_0, bpftool 5.14.0-70.105.1.el9_0, kernel-core 5.14.0-70.105.1.el9_0, kernel-tools 5.14.0-70.105.1.el9_0, python3-perf 5.14.0-70.105.1.el9_0, kernel-modules 5.14.0-70.105.1.el9_0, +14 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:4415
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.64.1.el8_8, kernel 4.18.0-477.64.1.el8_8, bpftool 4.18.0-477.64.1.el8_8, kernel-core 4.18.0-477.64.1.el8_8, kernel-tools 4.18.0-477.64.1.el8_8, python3-perf 4.18.0-477.64.1.el8_8, +15 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:4740
show 4 more
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.69.1.el9_2, kernel 5.14.0-284.69.1.el9_2, kernel-64k 5.14.0-284.69.1.el9_2, kernel-core 5.14.0-284.69.1.el9_2, kernel-tools 5.14.0-284.69.1.el9_2, python3-perf 5.14.0-284.69.1.el9_2, +28 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:3855
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +8 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:8161
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-modules 5.14.0-284.69.1.rt14.354.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, +6 more
    fixed: vendor fix “No mitigation is currently available for this vulnerability. Make sure to perform the updates as they become available.” RHSA-2024:3854
  • 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 Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.69.1.el9_2
    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-25-226-15 updated

Siemens SINEC OS

  • Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
    not affected

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
total
Assessed
18 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux
  • linux linux_kernel

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.