Riskcovery

CVE-2026-23445

igc: fix page fault in XDP TX timestamps handling

State
Published
Severity
7.8 High
Published
Apr 3, 2026
Updated
Oct 19, 2026
Reserved
Jan 13, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 15fd021bc4270273d8f4b7f58fdda8a16214a377 to before 5e4c90c94eb766d70e30694b7fe66862aabaf24bAffected
  • 15fd021bc4270273d8f4b7f58fdda8a16214a377 to before 31521c124e6488c4a81658e35199feb75a988d86Affected
  • 15fd021bc4270273d8f4b7f58fdda8a16214a377 to before b02fa17d1744d19cd3820bdbf6ec5d85547977bfAffected
  • 15fd021bc4270273d8f4b7f58fdda8a16214a377 to before 45b33e805bd39f615d9353a7194b2da5281332dfAffected
LinuxLinux
  • 6.10Affected
  • before 6.10Not affected
  • 6.12.78 through 6.12.*Not affected
  • 6.18.20 through 6.18.*Not affected
  • 6.19.10 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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