VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-98003: Linux kernel · iommu/amd: Do not reallocate GA log buffers on resume

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in ff85cdc2889e1c885eed218ee5bc0b59e0235b3f : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ff85cdc2889e1c885eed218ee5bc0b59e0235b3f, b6be275d19cee01f8f1f08a2ff18337103d05d40, 94458b80d3b203c1c9e2c98aa7319b7713e006c0 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b, < ff85cdc2889e1c885eed218ee5bc0b59e0235b3f	Fixed in ff85cdc2889e1c885eed218ee5bc0b59e0235b3f
LinuxLinux	Affected ≥ c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b, < b6be275d19cee01f8f1f08a2ff18337103d05d40	Fixed in b6be275d19cee01f8f1f08a2ff18337103d05d40
LinuxLinux	Affected ≥ c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b, < 94458b80d3b203c1c9e2c98aa7319b7713e006c0	Fixed in 94458b80d3b203c1c9e2c98aa7319b7713e006c0
LinuxLinux	Affected ≥ c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b, < 8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434	Fixed in 8b95269d7a43b737c2c0e2fa77bf00cc8a3a4434
LinuxLinux	Affected ≥ c5e1a1eb9279fdb28d47ca2a4493a4c53b7d6a0b, < 00a7dd64888d6dd72110b40e2824a088cf7b7386	Fixed in 00a7dd64888d6dd72110b40e2824a088cf7b7386
LinuxLinux	Affected =6.0	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Do not reallocate GA log buffers on resume Commit c5e1a1eb9279 ("iommu/amd: Simplify and Consolidate Virtual APIC (AVIC) Enablement") moved the GA log allocation from iommu_init_pci() to enable_iommus_vapic(), which is called on every resume. iommu_init_ga_log() assigns iommu->ga_log and iommu->ga_log_tail unconditionally. Each resume therefore replaces the boot-time pointers and leaks both old allocations. The function also uses GFP_KERNEL from a syscore resume callback, where interrupts are disabled and the non-boot CPUs are offline. Return early if both buffers are already allocated. Clear the pointers in free_ga_log() so a partial allocation failure cannot leave ga_log dangling.

References

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