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CVE Record

CVE-2026-23329: libie: don't unroll if fwlog isn't supported

In the Linux kernel, the following vulnerability has been resolved: libie: don't unroll if fwlog isn't supported The libie_fwlog_deinit() function can be called during driver unload even when firmware logging was never properly initialized. This led to call trace: [ 148.576156] Oops: Oops: 0000 [#1] SMP NOPTI [ 148.576167] CPU: 80 UID: 0 PID: 12843 Comm: rmmod Kdump: loaded Not tainted 6.17.0-rc7next-queue-3oct-01915-g06d79d51cf51 #1 PREEMPT(full) [ 148.576177] Hardware name: HPE ProLiant DL385 Gen10 Plus/ProLiant DL385 Gen10 Plus, BIOS A42 07/18/2020 [ 148.576182] RIP: 0010:__dev_printk+0x16/0x70 [ 148.576196] Code: 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 41 55 41 54 49 89 d4 55 48 89 fd 53 48 85 f6 74 3c <4c> 8b 6e 50 48 89 f3 4d 85 ed 75 03 4c 8b 2e 48 89 df e8 f3 27 98 [ 148.576204] RSP: 0018:ffffd2fd7ea17a48 EFLAGS: 00010202 [ 148.576211] RAX: ffffd2fd7ea17aa0 RBX: ffff8eb288ae2000 RCX: 0000000000000000 [ 148.576217] RDX: ffffd2fd7ea17a70 RSI: 00000000000000c8 RDI: ffffffffb68d3d88 [ 148.576222] RBP: ffffffffb68d3d88 R08: 0000000000000000 R09: 0000000000000000 [ 148.576227] R10: 00000000000000c8 R11: ffff8eb2b1a49400 R12: ffffd2fd7ea17a70 [ 148.576231] R13: ffff8eb3141fb000 R14: ffffffffc1215b48 R15: ffffffffc1215bd8 [ 148.576236] FS: 00007f5666ba6740(0000) GS:ffff8eb2472b9000(0000) knlGS:0000000000000000 [ 148.576242] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 148.576247] CR2: 0000000000000118 CR3: 000000011ad17000 CR4: 0000000000350ef0 [ 148.576252] Call Trace: [ 148.576258] <TASK> [ 148.576269] _dev_warn+0x7c/0x96 [ 148.576290] libie_fwlog_deinit+0x112/0x117 [libie_fwlog] [ 148.576303] ixgbe_remove+0x63/0x290 [ixgbe] [ 148.576342] pci_device_remove+0x42/0xb0 [ 148.576354] device_release_driver_internal+0x19c/0x200 [ 148.576365] driver_detach+0x48/0x90 [ 148.576372] bus_remove_driver+0x6d/0xf0 [ 148.576383] pci_unregister_driver+0x2e/0xb0 [ 148.576393] ixgbe_exit_module+0x1c/0xd50 [ixgbe] [ 148.576430] __do_sys_delete_module.isra.0+0x1bc/0x2e0 [ 148.576446] do_syscall_64+0x7f/0x980 It can be reproduced by trying to unload ixgbe driver in recovery mode. Fix that by checking if fwlog is supported before doing unroll.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2026-23329 is a Linux kernel driver bug that can crash the system when the ixgbe network driver is unloaded in a recovery-mode scenario where firmware logging was not initialized. The public record does not show remote exploitation, active exploitation, or data exposure.

Executive priority

Treat as a targeted stability fix, not an internet-facing emergency. Prioritize patching on infrastructure where ixgbe driver removal or recovery workflows could cause downtime, especially high-availability or maintenance-sensitive servers.

Technical view

The issue is in libie_fwlog_deinit(). During ixgbe driver removal, cleanup could run even when firmware logging was unsupported or uninitialized, leading to a kernel Oops. The kernel fix checks firmware-log support before cleanup unroll logic.

Likely exposure

Exposure appears limited to Linux systems using affected kernel builds with the ixgbe driver and libie firmware logging path. The source lists Linux kernel versions including 6.18, 6.18.17, 6.19.7, and 7.0, but distro backports may differ.

Exploitation context

The source describes reproduction by unloading the ixgbe driver in recovery mode. That generally implies local administrative control or operational maintenance activity. CISA KEV is false in the provided data, and no cited source states active exploitation.

Researcher notes

Public details indicate a defensive kernel cleanup bug with denial-of-service impact through kernel Oops. No CVSS, CWE, or exploitation evidence is provided. Affected-version data is limited; validate against upstream stable commits and distribution-specific backports.

Mitigation direction

  • Apply vendor-provided kernel updates that include the referenced stable fixes.
  • Prioritize systems using ixgbe network adapters and affected kernel branches.
  • Avoid unnecessary ixgbe driver unload operations on unpatched systems.
  • Check Linux distribution advisories for backported fixes and package versions.

Validation and detection

  • Inventory Linux kernel versions and ixgbe driver usage across servers.
  • Confirm installed kernels include one of the referenced stable commits or vendor equivalent.
  • Review crash logs for kernel Oops traces involving libie_fwlog_deinit and ixgbe_remove.
  • Validate remediation in a non-production maintenance window where feasible.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
4Source links

Vulnerability timeline

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  2. CVE publishedCVE Program

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  3. CVE updatedCVE Program

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux641585bc978e0a1170ca8f12fbb1468b3874a2db, 641585bc978e0a1170ca8f12fbb1468b3874a2db, 641585bc978e0a1170ca8f12fbb1468b3874a2dbunaffected
LinuxLinux6.18, 0, 6.18.17, 6.19.7, 7.0affected
Weakness

CWE details

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