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CVE-2023-3159

ROUTINE

Telemetry drift only. No threshold crossed and no authority ruling changed.

CVE record, CISA KEV and EPSS as of 2026-10-18.

CVEs like this one computed, by meaning

What to do now held facts and links

  1. Upgrade to kernel 5.18 or later upper bounds of the CVE record's affected ranges
  2. Record your decision, dated and frozen with today's evidence: patch by a date · mitigated by a compensating control · deferred · accepted the risk · not affected
  3. Check your version against the ranges this record publishes.

What it is stated by the CNA

A use after free issue was discovered in driver/firewire in outbound_phy_packet_callback in the Linux Kernel. In this flaw a local attacker with special privilege may cause a use after free problem when queue_event() fails.

weakness
CWE-416
affected
n/a Kernel
published ranges
linux kernel < 5.18; linux kernel 5.18; linux kernel 5.18-rc1; linux kernel 5.18-rc2; and 3 more on the CVE page
first unaffected version, by branch
kernel 5.18
assigned by
redhat
published
2023-06-12

check us github.com

Exploit code held, dated

exploit code
None held in the PoC-in-GitHub feed. A public repository changes this brief.

What moved held, dated

dateEPSSevent
13 Jun 20230.0005
21 Jun 20230.00042
17 Mar 20250.00047scoring model v2025.03.14
29 Mar 20250.00207
30 Mar 20250.00047
15 Apr 20250.00015
30 Jul 20250.00014
10 Aug 20250.00013
18 Nov 20250.00051
21 Nov 20250.00013
18 Dec 20250.00011
21 Dec 20250.00012
13 Jun 20260.00014
15 Jun 20260.00228scoring model v2026.06.15
27 Jul 20260.00212
28 Jul 20260.00215

16 observations held. A step marked with a scoring model moved because the measurement was replaced, not because the vulnerability changed.

Outside the record researched, cited

This section reads the record's references and adds cited findings from outside it. It needs an account. Everything above is held facts and is complete without it.

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What would change this brief held, dated

CISA KEV
Not listed in the catalogue we hold. A listing changes this brief.
exploit probability
0.00 on 2026-07-28 (FIRST's EPSS, a probability and not evidence of exploitation). Next band line: 10% (0.10). Crossing a line changes this brief.
fix
Held: kernel 5.18. A newer fix from the CNA or OSV changes this brief.

Watch this CVE What counts as a move

How to check this

Every value above is held with two dates: when it was true upstream (as_of) and when we recorded it (tx_from). Re-derive the exploit probability as it stood on any date:

SELECT value, source, source_version, as_of, tx_from
FROM volatile_valid_as_of('CVE-2023-3159', '2026-10-31T23:59:59.999999Z', now());