CVE-2026-23041
published 2026-02-04CVE-2026-23041: In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When…
PriorityP420
EPSS
0.14%
4.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnxt_init_one() fails during initialization (e.g.,
bnxt_init_int_mode returns -ENODEV), the error path calls
bnxt_free_hwrm_resources() which destroys the DMA pool and sets
bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called,
which invokes ptp_clock_unregister().
Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to
disable events"), ptp_clock_unregister() now calls
ptp_disable_all_events(), which in turn invokes the driver's .enable()
callback (bnxt_ptp_enable()) to disable PTP events before completing the
unregistration.
bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin()
and bnxt_ptp_cfg_event(), both of which call hwrm_req_init(). This
function tries to allocate from bp->hwrm_dma_pool, causing a NULL
pointer dereference:
bnxt_en 0000:01:00.0 (unnamed net_device) (uninitialized): bnxt_init_int_mode err: ffffffed
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
Call Trace:
__hwrm_req_init (drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c:72)
bnxt_ptp_enable (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:323 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:517)
ptp_disable_all_events (drivers/ptp/ptp_chardev.c:66)
ptp_clock_unregister (drivers/ptp/ptp_clock.c:518)
bnxt_ptp_clear (drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1134)
bnxt_init_one (drivers/net/ethernet/broadcom/bnxt/bnxt.c:16889)
Lines are against commit f8f9c1f4d0c7 ("Linux 6.19-rc3")
Fix this by clearing and unregistering ptp (bnxt_ptp_clear()) before
freeing HWRM resources.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.18.8-1 (forky) | linux 6.18.8-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= a60fc3294a377204664b5484e4a487fa124155da < 0174d5466caefc22f03a36c43b2a3cce7e332627 | 0174d5466caefc22f03a36c43b2a3cce7e332627 |
| linux | linux | >= a60fc3294a377204664b5484e4a487fa124155da < 3358995b1a7f9dcb52a56ec8251570d71024dad0 | 3358995b1a7f9dcb52a56ec8251570d71024dad0 |
| linux | linux_kernel | >= 0 < 6.18.8-1 | 6.18.8-1 |
| linux | linux_kernel | >= 6.18.0 < 6.18.6 | 6.18.6 |
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VulDB
Linux Kernel up to 6.18.5/6.19-rc4 bnxt_en bnxt_hwrm.c bnxt_init_one null pointer dereference (Nessus ID 297940 / WID-SEC-2026-0324)
vuldb·2026-04-30
CVE-2026-23041 [CRITICAL] Linux Kernel up to 6.18.5/6.19-rc4 bnxt_en bnxt_hwrm.c bnxt_init_one null pointer dereference (Nessus ID 297940 / WID-SEC-2026-0324)
A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.18.5/6.19-rc4. This impacts the function bnxt_init_one of the file drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c of the component bnxt_en. Such manipulation leads to null pointer dereference.
This vulnerability is documented as CVE-2026-23041. The attack requires being on the local network. There is not any exploit available.
You should upgrade the affected component.
OSV
CVE-2026-23041: In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When bnxt_
osv·2026-02-04
CVE-2026-23041 CVE-2026-23041: In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When bnxt_
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When bnxt_init_one() fails during initialization (e.g., bnxt_init_int_mode returns -ENODEV), the error path calls bnxt_free_hwrm_resources() which destroys the DMA pool and sets bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called, which invokes ptp_clock_unregister(). Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events"), ptp_clock_unregister() now calls ptp_disable_all_events(), which in turn invokes the driver's .enable() callback (bnxt_ptp_enable()) to disable PTP events before completing the unregistration. bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin() and bnxt_ptp_cfg_event(),
GHSA
GHSA-f2r6-xf7j-hxvf: In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnx
ghsa_unreviewed·2026-02-04
CVE-2026-23041 GHSA-f2r6-xf7j-hxvf: In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnx
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnxt_init_one() fails during initialization (e.g.,
bnxt_init_int_mode returns -ENODEV), the error path calls
bnxt_free_hwrm_resources() which destroys the DMA pool and sets
bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called,
which invokes ptp_clock_unregister().
Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to
disable events"), ptp_clock_unregister() now calls
ptp_disable_all_events(), which in turn invokes the driver's .enable()
callback (bnxt_ptp_enable()) to disable PTP events before completing the
unregistration.
bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin()
and bnxt_ptp_cfg_event
OSV
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
osv·2026-02-04
CVE-2026-23041 bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnxt_init_one() fails during initialization (e.g.,
bnxt_init_int_mode returns -ENODEV), the error path calls
bnxt_free_hwrm_resources() which destroys the DMA pool and sets
bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called,
which invokes ptp_clock_unregister().
Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to
disable events"), ptp_clock_unregister() now calls
ptp_disable_all_events(), which in turn invokes the driver's .enable()
callback (bnxt_ptp_enable()) to disable PTP events before completing the
unregistration.
bnxt_ptp_enable() att
Red Hat
kernel: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
vendor_redhat·2026-02-04
CVE-2026-23041 [MEDIUM] kernel: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
kernel: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
When bnxt_init_one() fails during initialization (e.g.,
bnxt_init_int_mode returns -ENODEV), the error path calls
bnxt_free_hwrm_resources() which destroys the DMA pool and sets
bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called,
which invokes ptp_clock_unregister().
Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to
disable events"), ptp_clock_unregister() now calls
ptp_disable_all_events(), which in turn invokes the driver's .enable()
callback (bnxt_ptp_enable()) to disable PTP events before completing the
unregistration.
bnxt_ptp_enable()
Debian
CVE-2026-23041: linux - In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fi...
vendor_debian·2026
CVE-2026-23041 [LOW] CVE-2026-23041: linux - In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fi...
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup When bnxt_init_one() fails during initialization (e.g., bnxt_init_int_mode returns -ENODEV), the error path calls bnxt_free_hwrm_resources() which destroys the DMA pool and sets bp->hwrm_dma_pool to NULL. Subsequently, bnxt_ptp_clear() is called, which invokes ptp_clock_unregister(). Since commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events"), ptp_clock_unregister() now calls ptp_disable_all_events(), which in turn invokes the driver's .enable() callback (bnxt_ptp_enable()) to disable PTP events before completing the unregistration. bnxt_ptp_enable() attempts to send HWRM commands via bnxt_ptp_cfg_pin() and bnxt_ptp_cfg_event(),
No detection rules found.
No public exploits indexed.
2026-02-04
Published