VulnerabilityPublished 27 May 2026Updated 21 Oct 2026

CVE-2026-45917: Linux kernel · ipvs: do not keep dest_dst if dev is going down

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in bae53b3baf2ff2f45f9205c438818fc055601a54 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in bae53b3baf2ff2f45f9205c438818fc055601a54, 64af43033503458c46023e56d6ae7bb0f824b55f, 024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e +2

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 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 ≥ 7a4f0761fce32ff4918a7c23b08db564ad33092d, < bae53b3baf2ff2f45f9205c438818fc055601a54	Fixed in bae53b3baf2ff2f45f9205c438818fc055601a54
LinuxLinux	Affected ≥ 7a4f0761fce32ff4918a7c23b08db564ad33092d, < 64af43033503458c46023e56d6ae7bb0f824b55f	Fixed in 64af43033503458c46023e56d6ae7bb0f824b55f
LinuxLinux	Affected ≥ 7a4f0761fce32ff4918a7c23b08db564ad33092d, < 024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e	Fixed in 024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e
LinuxLinux	Affected ≥ 7a4f0761fce32ff4918a7c23b08db564ad33092d, < 11d35b11013442576f35fd9e8a8fc16155101906	Fixed in 11d35b11013442576f35fd9e8a8fc16155101906
LinuxLinux	Affected ≥ 7a4f0761fce32ff4918a7c23b08db564ad33092d, < 8fde939b0206afc1d5846217a01a16b9bc8c7896	Fixed in 8fde939b0206afc1d5846217a01a16b9bc8c7896
LinuxLinux	Affected =2.6.39	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: ipvs: do not keep dest_dst if dev is going down There is race between the netdev notifier ip_vs_dst_event() and the code that caches dst with dev that is going down. As the FIB can be notified for the closed device after our handler finishes, it is possible valid route to be returned and cached resuling in a leaked dev reference until the dest is not removed. To prevent new dest_dst to be attached to dest just after the handler dropped the old one, add a netif_running() check to make sure the notifier handler is not currently running for device that is closing.

References

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