CVE-2024-26598 (GCVE-0-2024-26598)

Vulnerability from cvelistv5 – Published: 2024-02-23 14:46 – Updated: 2026-08-05 11:26
VLAI
Title
KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
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.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < d04acadb6490aa3314f9c9e087691e55de153b88 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < ba7be666740847d967822bed15500656b26bc703 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 12c2759ab1343c124ed46ba48f27bd1ef5d2dff4 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < dba788e25f05209adf2b0175eb1691dc89fb1ba6 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < 65b201bf3e9af1b0254243a5881390eda56f72d1 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < dd3956a1b3dd11f46488c928cb890d6937d1ca80 (git)
Affected: 6211753fdfd05af9e08f54c8d0ba3ee516034878 , < ad362fe07fecf0aba839ff2cc59a3617bd42c33f (git)
Create a notification for this product.
Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 5.4.269 , ≤ 5.4.* (semver)
Unaffected: 5.10.209 , ≤ 5.10.* (semver)
Unaffected: 5.15.148 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < d04acadb6490 (custom)
Affected: 1da177e4c3f4 , < ba7be6667408 (custom)
Affected: 1da177e4c3f4 , < 12c2759ab134 (custom)
Affected: 1da177e4c3f4 , < dba788e25f05 (custom)
Affected: 1da177e4c3f4 , < 65b201bf3e9a (custom)
Affected: 1da177e4c3f4 , < dd3956a1b3dd (custom)
Affected: 1da177e4c3f4 , < ad362fe07fec (custom)
Unaffected: 5.4.269 , ≤ 5.5 (custom)
Unaffected: 5.10.209 , ≤ 5.11 (custom)
Unaffected: 5.15.148 , ≤ 5.16 (custom)
Unaffected: 6.1.75 , ≤ 6.2 (custom)
Unaffected: 6.6.14 , ≤ 6.7 (custom)
Unaffected: 6.7.2 , ≤ 6.8 (custom)
Unaffected: 6.8 , ≤ * (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
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      "id": "CVE-2024-26598",
      "lastModified": "2024-11-21T09:02:37.617",
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    "redhat_vex": {
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      "current_release_date": "2026-08-04T19:13:00+00:00",
      "cve": "CVE-2024-26598",
      "id": "CVE-2024-26598",
      "initial_release_date": "2024-02-23T00:00:00+00:00",
      "product_status:fixed": "634",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "43",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kvm: Avoid potential UAF in LPI translation cache",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26598.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-23T02:10:01Z",
      "cve": "CVE-2024-26598",
      "id": "CVE-2024-26598",
      "initial_release_date": "2024-02-27T03:54:39Z",
      "product_status:known_affected": "255",
      "product_status:known_not_affected": "273",
      "product_status:recommended": "683",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26598",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26598.json",
      "version": "58"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:07:19.689Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26598\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-22T16:15:47.782832Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"d04acadb6490\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"ba7be6667408\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"12c2759ab134\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"dba788e25f05\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"65b201bf3e9a\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"dd3956a1b3dd\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"ad362fe07fec\", \"versionType\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.5\"}, {\"status\": \"unaffected\", \"version\": \"5.10.209\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.11\"}, {\"status\": \"unaffected\", \"version\": \"5.15.148\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.16\"}, {\"status\": \"unaffected\", \"version\": \"6.1.75\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.2\"}, {\"status\": \"unaffected\", \"version\": \"6.6.14\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"6.7.2\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"*\"}], \"defaultStatus\": \"unknown\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-08-07T15:34:11.687Z\"}}], \"cna\": {\"title\": \"KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - Exploitation requires running code inside a KVM/arm64 guest (to issue ITS DISCARD/MAPD commands via GITS_CWRITER) or holding local /dev/kvm access to drive KVM_SIGNAL_MSI, so the attacker needs local access to the host or a VM on it. No purely remote network path can drive both sides of the race.\\nAC:L - The attacker controls both sides of the race \\u2014 one vCPU thread issues DISCARD/MAPD ITS commands while another CPU (vhost worker via irqfd, or a userspace KVM_SIGNAL_MSI thread) performs the cache lookup \\u2014 and can prime the cache deterministically with an INT command and repeat the loop indefinitely without any detection or rate limit.\\nPR:L - The attacker only needs to be an unprivileged guest (or a local unprivileged user with /dev/kvm access, which is standard on virtualization hosts); no host root or special capability is required, and ITS emulation is created by default by QEMU\u0027s virt machine with GICv3.\\nUI:N - The entire sequence \\u2014 MAPTI/INT to populate the translation cache, MSI generation, and the DISCARD command \\u2014 is driven autonomously by the attacker from inside the guest. No victim action is needed.\\nS:C - The vulnerable component is KVM\u0027s vGIC ITS emulation, whose security authority is the guest VM, but the corrupted memory is host kernel heap; a guest crossing into host kernel memory is a guest-to-host boundary violation.\\nC:H - The freed vgic_irq can be reallocated with attacker-controlled data and is then read back (intid, priority, group, config, vcpu/target_vcpu pointers) and re-linked into live host kernel lists, giving an arbitrary-pointer dereference and kernel memory disclosure primitive.\\nI:H - The stale pointer is written through \\u2014 spinlock acquire, pending_latch store, kref increment, and list_add_tail writing both into the freed chunk and storing its address into the live ap_list \\u2014 a use-after-free write primitive leveragable for control-flow hijack and host privilege escalation.\\nA:H - Even without successful heap grooming, the use-after-free corrupts the vgic ap_list and LPI list, reliably producing kernel oops, list-corruption BUG, or lock-up, taking down the entire host and all co-resident VMs.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"d04acadb6490aa3314f9c9e087691e55de153b88\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"ba7be666740847d967822bed15500656b26bc703\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"12c2759ab1343c124ed46ba48f27bd1ef5d2dff4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"dba788e25f05209adf2b0175eb1691dc89fb1ba6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"65b201bf3e9af1b0254243a5881390eda56f72d1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"dd3956a1b3dd11f46488c928cb890d6937d1ca80\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6211753fdfd05af9e08f54c8d0ba3ee516034878\", \"lessThan\": \"ad362fe07fecf0aba839ff2cc59a3617bd42c33f\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/arm64/kvm/vgic/vgic-its.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.209\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.148\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/arm64/kvm/vgic/vgic-its.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d04acadb6490aa3314f9c9e087691e55de153b88\"}, {\"url\": \"https://git.kernel.org/stable/c/ba7be666740847d967822bed15500656b26bc703\"}, {\"url\": \"https://git.kernel.org/stable/c/12c2759ab1343c124ed46ba48f27bd1ef5d2dff4\"}, {\"url\": \"https://git.kernel.org/stable/c/dba788e25f05209adf2b0175eb1691dc89fb1ba6\"}, {\"url\": \"https://git.kernel.org/stable/c/65b201bf3e9af1b0254243a5881390eda56f72d1\"}, {\"url\": \"https://git.kernel.org/stable/c/dd3956a1b3dd11f46488c928cb890d6937d1ca80\"}, {\"url\": \"https://git.kernel.org/stable/c/ad362fe07fecf0aba839ff2cc59a3617bd42c33f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nKVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache\\n\\nThere is a potential UAF scenario in the case of an LPI translation\\ncache hit racing with an operation that invalidates the cache, such\\nas a DISCARD ITS command. The root of the problem is that\\nvgic_its_check_cache() does not elevate the refcount on the vgic_irq\\nbefore dropping the lock that serializes refcount changes.\\n\\nHave vgic_its_check_cache() raise the refcount on the returned vgic_irq\\nand add the corresponding decrement after queueing the interrupt.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.269\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.209\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.148\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.75\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"3.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:26:10.792Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26598\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:26:10.792Z\", \"dateReserved\": \"2024-02-19T14:20:24.128Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-23T14:46:26.672Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.