In the Linux kernel, the following vulnerability has been resolved:

gve: fix NULL dereference due to missing ptp adjfine

Fix NULL dereference due to missing implementation of adjfine, which can
be triggered from usermode as follows:

sudo ./testptp -d /dev/ptp0 -f 0
[ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000
[...]
[ 552.061946] Call Trace:
[ 552.064487] <TASK>
[ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0
[ 552.070874] ? get_clock_desc+0x6b/0xb0
[ 552.074825] pc_clock_adjtime+0x78/0xc0
[ 552.078755] __do_sys_clock_adjtime+0x85/0x110
[ 552.083293] do_syscall_64+0xea/0x610
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 26 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Wed, 26 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: gve: fix NULL dereference due to missing ptp adjfine Fix NULL dereference due to missing implementation of adjfine, which can be triggered from usermode as follows: sudo ./testptp -d /dev/ptp0 -f 0 [ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] [ 552.061946] Call Trace: [ 552.064487] <TASK> [ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0 [ 552.070874] ? get_clock_desc+0x6b/0xb0 [ 552.074825] pc_clock_adjtime+0x78/0xc0 [ 552.078755] __do_sys_clock_adjtime+0x85/0x110 [ 552.083293] do_syscall_64+0xea/0x610
Title gve: fix NULL dereference due to missing ptp adjfine
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-26T14:37:28.351Z

Reserved: 2026-08-26T14:34:25.767Z

Link: CVE-2026-80564

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-26T15:17:11.433

Modified: 2026-08-26T15:17:11.433

Link: CVE-2026-80564

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T17:45:03Z

Weaknesses