CVE-2024-26598: KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
Vulnerability summary
CVE-2024-26598 is a high (CVSS 8.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% of scored vulnerabilities.
Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 23 · Related 20Timeline
- 23-02-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linux< 5.4.0-181.201 | < 5.15.0-102.112
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1124.134 | < 5.15.0-1057.63
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.76-1 | < 6.6.15-1
- debian_linuxEOL10.0
Linux2 products
- linux≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < d04acadb6490aa3314f9c9e087691e55de153b88 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < ba7be666740847d967822bed15500656b26bc703 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < 12c2759ab1343c124ed46ba48f27bd1ef5d2dff4 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < dba788e25f05209adf2b0175eb1691dc89fb1ba6 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < 65b201bf3e9af1b0254243a5881390eda56f72d1 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < dd3956a1b3dd11f46488c928cb890d6937d1ca80 | ≥ 6211753fdfd05af9e08f54c8d0ba3ee516034878, < ad362fe07fecf0aba839ff2cc59a3617bd42c33f | 3.11
- linux_kernel≥ 5.4, < 5.4.269 | ≥ 5.5, < 5.10.209 | ≥ 5.11, < 5.15.148 | ≥ 5.16, < 6.1.75 | ≥ 6.2, < 6.6.14 | ≥ 6.7, < 6.7.2
3 vendors · 116 products
