# CVE-2026-68291: linux: In the Linux kernel, the following vulnerability has been resolved:  idpf: fix max_vport related crash on allocation...

CVE-2026-68291 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-68291, released August 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-68291
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 10, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  idpf: fix max_vport related crash on allocation error during init  Set adapter->max_vports only after successful allocation of vports, netdevs and  vport_config buffers. This fixes possible crashes on reset or rmmod, following failed allocation on init  [  305.981402] idpf 0000:83:00.0: enabling device (0100 -> 0102) [  305.994464] idpf 0000:83:00.0: Device HW Reset initiated [  320.416872] BUG: kernel NULL pointer dereference, address: 0000000000000000 [  320.416918] #PF: supervisor read access in kernel mode [  320.416942] #PF: error_code(0x0000) - not-present page [  320.416963] PGD 2099657067 P4D 0 [  320.416983] Oops: Oops: 0000 [#1] SMP NOPTI ... [  320.417093] RIP: 0010:idpf_remove+0x118/0x200 [idpf] [  320.417130] Code: 8b bb 98 09 00 00 e8 17 0f 5b e5 48 8b bb e8 08 00 00 e8 0b 0f 5b e5 66 83 bb 28 06 00 00 00 48 8b bb 20 06 00 00 74 49 31 ed <48> 8b 04 ef 48 85 c0 74 2f 48 8b 78 20 e8 66 58 91 e5 48 8b 83 20 [  320.417183] RSP: 0018:ff7322212903fdb8 EFLAGS: 00010246 [  320.417205] RAX: 0000000000000000 RBX: ff4463de40300000 RCX: ff7322212903fd4c [  320.417228] RDX: 0000000000000001 RSI: ffffffffa7f7d100 RDI: 0000000000000000 [  320.417250] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [  320.417272] R10: 0000000000000001 R11: ff4463de3a638f58 R12: ff4463be89ac7000 [  320.417294] R13: ff4463be89ac7198 R14: ff4463be94fc7198 R15: ffffffffc0f10f20 [  320.417317] FS:  00007f963c0e6740(0000) GS:ff4463fdd65d8000(0000) knlGS:0000000000000000 [  320.417342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [  320.417362] CR2: 0000000000000000 CR3: 00000020ba674002 CR4: 0000000000773ef0 [  320.417385] PKRU: 55555554 [  320.417398] Call Trace: [  320.417412]  <TASK> [  320.417429]  pci_device_remove+0x42/0xb0 [  320.417459]  device_release_driver_internal+0x1a9/0x210 [  320.417492]  driver_detach+0x4b/0x90 [  320.417516]  bus_remove_driver+0x70/0x100 [  320.417539]  pci_unregister_driver+0x2e/0xb0 [  320.417564]  __do_sys_delete_module.constprop.0+0x190/0x2f0 [  320.417592]  ? kmem_cache_free+0x31e/0x550 [  320.417619]  ? lockdep_hardirqs_on_prepare+0xde/0x190 [  320.417644]  ? do_syscall_64+0x38/0x6b0 [  320.417665]  do_syscall_64+0xc8/0x6b0 [  320.417683]  ? clear_bhb_loop+0x30/0x80 [  320.417706]  entry_SYSCALL_64_after_hwframe+0x76/0x7e [  320.417727] RIP: 0033:0x7f963bb30beb

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-68291](https://patchblox.com/security/data/fix/linux/debian-cve-2026-68291.md) | Aug 11, 2026 |
| Linux | linux Debian 14 | 7.1.6-1 | [DEBIAN-CVE-2026-68291](https://patchblox.com/security/data/fix/linux/debian-cve-2026-68291.md) | Aug 11, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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