CVE-2026-64430
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
NTB: epf: Avoid calling pci_irq_vector() from hardirq context
In the Linux kernel, the following vulnerability has been resolved: NTB: epf: Avoid calling pci_irq_vector() from hardirq context ntb_epf_vec_isr() calls pci_irq_vector() in hardirq context to derive the vector number. pci_irq_vector() calls msi_get_virq() that takes a mutex and can therefore trigger "scheduling while atomic" splats: BUG: scheduling while atomic: kworker/u33:0/55/0x00010001 ... Call trace: ... schedule+0x38/0x110 schedule_preempt_disabled+0x28/0x50 __mutex_lock.constprop.0+0x848/0x908 __mutex_lock_slowpath+0x18/0x30 mutex_lock+0x4c/0x60 msi_domain_get_virq+0xe8/0x138 pci_irq_vector+0x2c/0x60 ntb_epf_vec_isr+0x28/0x120 [ntb_hw_epf] __handle_irq_event_percpu+0x70/0x3a8 handle_irq_event+0x48/0x100 handle_edge_irq+0x100/0x1c8 ... Cache the Linux IRQ number for vector 0 when vectors are allocated and use it as a base in the ISR. Running the ISR in a threaded IRQ handler would also avoid the problem, but that would be unnecessary here.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | 33bba331a4a5fee8b6026fe72eca13cceeec1b7b | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | aff271b12a1eb8c8b3da19223ae1a6abe1e8168b | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | 1dba8444ac0100133d72374634f6d7451fff1ccc | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | 174a97f21bf9c54fa37ec0f321692e862ea130a3 | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | f71e8d9875069fa73e335f63f02ec6e52e3aaa51 | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | 6350df503897d57c5634f71b0767d48c3b837583 | Unavailable | None listed |
| 812ce2f8d14ea791edd88c36ebcc9017bf4c88cb | affected | git | 4dcddc1c794d1c65eda68f1f8dd04a0fecc0870f | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.12 | Unavailable | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |