CVE-2026-99043: Linux kernel · ice: fix metadata_dst refcount handling on representor teardown
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in beb05f484a1e4a5a66e3678e4b7f3147f651c080 : patch Linux kernel soon.
Data as of 26 Oct 2026, 14:00 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in beb05f484a1e4a5a66e3678e4b7f3147f651c080, 58858b8f14803a7eeac297b3ce20f3b21bf2ff66, 6f5544f53f1e58ea8a49fb9f9158d5793b9205b0 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 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.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to the fixed versions identified by the commits listed in establishedFacts.fixedVersions to remediate this issue.
Description
A vulnerability in the Linux kernel's ice driver involves improper reference count handling of metadata_dst during representor teardown. The flaw causes metadata_dst to be freed prematurely while references are still held, potentially leading to use-after-free conditions. This issue is fixed by replacing metadata_dst_free() with dst_release(), which correctly manages reference counts and memory cleanup.
References
- git.kernel.org/stable/c/1f263235651775f93c15d90c9f25c3f4a4ef6512 (opens in a new tab)
- git.kernel.org/stable/c/6f5544f53f1e58ea8a49fb9f9158d5793b9205b0 (opens in a new tab)
- git.kernel.org/stable/c/beb05f484a1e4a5a66e3678e4b7f3147f651c080 (opens in a new tab)
- git.kernel.org/stable/c/5e4d20db5179e83a4948927bc39e489a9a83256d (opens in a new tab)
- git.kernel.org/stable/c/58858b8f14803a7eeac297b3ce20f3b21bf2ff66 (opens in a new tab)