High · CVSS 7.8CVE-2026-23445

igc: fix page fault in XDP TX timestamps handlingCVE-2026-23445

Answer in brief

CVE-2026-23445 records a High severity (CVSS 7.8) vulnerability in igc: fix page fault in XDP TX timestamps handling. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 3, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=15fd021bc4270273d8f4b7f58fdda8a16214a377 <5e4c90c94eb766d70e30694b7fe66862aabaf24b \|\| >=15fd021bc4270273d8f4b7f58fdda8a16214a377 <31521c124e6488c4a81658e35199feb75a988d86 \|\| >=15fd021bc4270273d8f4b7f58fdda8a16214a377 <b02fa17d1744d19cd3820bdbf6ec5d85547977bf \|\| >=15fd021bc4270273d8f4b7f58fdda8a16214a377 <45b33e805bd39f615d9353a7194b2da5281332df	5e4c90c94eb766d70e30694b7fe66862aabaf24b, 31521c124e6488c4a81658e35199feb75a988d86, b02fa17d1744d19cd3820bdbf6ec5d85547977bf, 45b33e805bd39f615d9353a7194b2da5281332df
Linux/Linuxgeneric	6.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 5e4c90c94eb766d70e30694b7fe66862aabaf24b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Apr 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: igc: fix page fault in XDP TX timestamps handling If an XDP application that requested TX timestamping is shutting down while the link of the interface in use is still up the following kernel splat is reported: [ 883.803618] [ T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008 ... [ 883.803650] [ T1554] Call Trace: [ 883.803652] [ T1554] <TASK> [ 883.803654] [ T1554] igc_ptp_tx_tstamp_event+0xdf/0x160 [igc] [ 883.803660] [ T1554] igc_tsync_interrupt+0x2d5/0x300 [igc] ... During shutdown of the TX ring the xsk_meta pointers are left behind, so that the IRQ handler is trying to touch them. This issue is now being fixed by cleaning up the stale xsk meta data on TX shutdown. TX timestamps on other queues remain unaffected.

Quoted source text, attributed separately from HOL analysis.