VulnerabilityPublished 27 May 2026Updated 21 Oct 2026

CVE-2026-45893: Linux kernel · apparmor: Fix & Optimize table creation from possibly unaligned memory

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in e027999049c493fb728ead5a90db76942181a935 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 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 e027999049c493fb728ead5a90db76942181a935, 226c3b10aab23f73b03c47e7773107de56ba3a4e, 47e351dfef60ab0e3285133556e1a9c7f646a969 +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 ≥ e6e8bf418850d7958311a96ccfb594f2bcc8313e, < e027999049c493fb728ead5a90db76942181a935	Fixed in e027999049c493fb728ead5a90db76942181a935
LinuxLinux	Affected ≥ e6e8bf418850d7958311a96ccfb594f2bcc8313e, < 226c3b10aab23f73b03c47e7773107de56ba3a4e	Fixed in 226c3b10aab23f73b03c47e7773107de56ba3a4e
LinuxLinux	Affected ≥ e6e8bf418850d7958311a96ccfb594f2bcc8313e, < 47e351dfef60ab0e3285133556e1a9c7f646a969	Fixed in 47e351dfef60ab0e3285133556e1a9c7f646a969
LinuxLinux	Affected ≥ e6e8bf418850d7958311a96ccfb594f2bcc8313e, < 6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a	Fixed in 6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a
LinuxLinux	Affected ≥ e6e8bf418850d7958311a96ccfb594f2bcc8313e, < 1fbc4b24c7443ffd501609be74d9856fb940d703	Fixed in 1fbc4b24c7443ffd501609be74d9856fb940d703
LinuxLinux	Affected =4.11	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix & Optimize table creation from possibly unaligned memory Source blob may come from userspace and might be unaligned. Try to optize the copying process by avoiding unaligned memory accesses. - Added Fixes tag - Added "Fix &" to description as this doesn't just optimize but fixes a potential unaligned memory access [jj: remove duplicate word "convert" in comment trigger checkpatch warning]

References

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