KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 12 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
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.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.11 and later | 5.4.269, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 | Patch available | CNA |
- Linux VendorLinux Affected 3.11 and later Fixed in 5.4.269, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 Patch available CNA
CPE configurations NVD · 2
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.269, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8
Red Hat 5 advisories
- RHSA-2024:8161 Released 2024-10-16 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.126.1.el8_6, kernel-4.18.0-372.126.1.el8_6, kernel-abi-stablelists-4.18.0-372.126.1.el8_6 +14
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.126.1.el8_6, kernel-4.18.0-372.126.1.el8_6, kernel-abi-stablelists-4.18.0-372.126.1.el8_6 +19
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.126.1.el8_6, kernel-4.18.0-372.126.1.el8_6, kernel-abi-stablelists-4.18.0-372.126.1.el8_6 +14
- RHSA-2024:4740 Released 2024-07-23 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.64.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.64.1.el8_8, kernel-4.18.0-477.64.1.el8_8, kernel-abi-stablelists-4.18.0-477.64.1.el8_8 +19
- RHSA-2024:4415 Released 2024-07-09 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.105.1.el9_0, kernel-debug-devel-matched-5.14.0-70.105.1.el9_0, kernel-devel-5.14.0-70.105.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.105.1.el9_0, kernel-5.14.0-70.105.1.el9_0, kernel-abi-stablelists-5.14.0-70.105.1.el9_0 +14
Show 2 more Red Hat advisories
- RHSA-2024:3855 Released 2024-06-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.69.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.69.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.69.1.el9_2, kernel-64k-devel-5.14.0-284.69.1.el9_2 +9
- 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 +29
- RHSA-2024:3854 Released 2024-06-12 · Red Hat rating Moderatekernel-rt security and bug fix update
- 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-debug-5.14.0-284.69.1.rt14.354.el9_2 +9
- 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-core-5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-5.14.0-284.69.1.rt14.354.el9_2 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:4740 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2024:4415 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2024:8161 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2024:8161 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.0) | Fixed | RHSA-2024:4415 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:4740 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2024:8161 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:3854 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:3854 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-26598
- 2026-10-03 Alias added: GHSA-xfvp-h462-p6q2
References
Patch 7
- https://git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88
- https://git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703
- https://git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4
- https://git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6
- https://git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1
- https://git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80
- https://git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f
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Sources
- CVE-2024-26598 · CVE Program
- CVE-2024-26598 · NVD
- FIRST EPSS
- GHSA-xfvp-h462-p6q2 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-26598 · Red Hat security data · CC BY 4.0
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