CVE-2026-68291
idpf: fix max_vport related crash on allocation error during init
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
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Allocate buffers successfully before assigning adapter max_vports.
- Ensure vports and netdevs are allocated properly.
- Verify vport_config buffer allocation.
- Apply the provided kernel patch.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68291.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/237f1f7653b8729169af11fae79f01b90d00b87e | |
| https://git.kernel.org/stable/c/9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68291 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68291
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68291 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68291 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5', 'versionType': 'git'}, {'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '237f1f7653b8729169af11fae79f01b90d00b87e', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5', 'versionType': 'git'}, {'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '237f1f7653b8729169af11fae79f01b90d00b87e', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5', 'versionType': 'git'}, {'status': 'affected', 'version': '0fe45467a1041ea3657a7fa3a791c84c104fbd34', 'lessThan': '237f1f7653b8729169af11fae79f01b90d00b87e', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/intel/idpf/idpf_virtchnl.c'], 'defaultStatus': 'affected'}] Added 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 Added Reference https://git.kernel.org/stable/c/237f1f7653b8729169af11fae79f01b90d00b87e Added Reference https://git.kernel.org/stable/c/9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5