CVE-2025-37761

CVE-2025-37761 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix an out-of-bounds shift when invalidating TLB When the size of the range invalidated is larger than rounddown_pow_of_two(ULONG_MAX), The function macro roundup_pow_of_two(length) will hit an out-of-bounds shift [1]. Use a full TLB invalidation for such cases. v2: - Use a define for the range size limit over which we use a full TLB invalidation. (Lucas) - Use a better calculation of the limit. [1]: [ 39.202421] ------------[ cut here ]------------ [ 39.202657] UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 [ 39.202673] shift exponent 64 is too large for 64-bit type 'long unsigned int' [ 39.202688] CPU: 8 UID: 0 PID: 3129 Comm: xe_exec_system_ Tainted: G U 6.14.0+ #10 [ 39.202690] Tainted: [U]=USER [ 39.202690] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 2001 02/01/2023 [ 39.202691] Call Trace: [ 39.202692] <TASK> [ 39.202695] dump_stack_lvl+0x6e/0xa0 [ 39.202699] ubsan_epilogue+0x5/0x30 [ 39.202701] __ubsan_handle_shift_out_of_bounds.cold+0x61/0xe6 [ 39.202705] xe_gt_tlb_invalidation_range.cold+0x1d/0x3a [xe] [ 39.202800] ? find_held_lock+0x2b/0x80 [ 39.202803] ? mark_held_locks+0x40/0x70 [ 39.202806] xe_svm_invalidate+0x459/0x700 [xe] [ 39.202897] drm_gpusvm_notifier_invalidate+0x4d/0x70 [drm_gpusvm] [ 39.202900] __mmu_notifier_release+0x1f5/0x270 [ 39.202905] exit_mmap+0x40e/0x450 [ 39.202912] __mmput+0x45/0x110 [ 39.202914] exit_mm+0xc5/0x130 [ 39.202916] do_exit+0x21c/0x500 [ 39.202918] ? lockdep_hardirqs_on_prepare+0xdb/0x190 [ 39.202920] do_group_exit+0x36/0xa0 [ 39.202922] get_signal+0x8f8/0x900 [ 39.202926] arch_do_signal_or_restart+0x35/0x100 [ 39.202930] syscall_exit_to_user_mode+0x1fc/0x290 [ 39.202932] do_syscall_64+0xa1/0x180 [ 39.202934] ? do_user_addr_fault+0x59f/0x8a0 [ 39.202937] ? lock_release+0xd2/0x2a0 [ 39.202939] ? do_user_addr_fault+0x5a9/0x8a0 [ 39.202942] ? trace_hardirqs_off+0x4b/0xc0 [ 39.202944] ? clear_bhb_loop+0x25/0x80 [ 39.202946] ? clear_bhb_loop+0x25/0x80 [ 39.202947] ? clear_bhb_loop+0x25/0x80 [ 39.202950] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 39.202952] RIP: 0033:0x7fa945e543e1 [ 39.202961] Code: Unable to access opcode bytes at 0x7fa945e543b7. [ 39.202962] RSP: 002b:00007ffca8fb4170 EFLAGS: 00000293 [ 39.202963] RAX: 000000000000003d RBX: 0000000000000000 RCX: 00007fa945e543e3 [ 39.202964] RDX: 0000000000000000 RSI: 00007ffca8fb41ac RDI: 00000000ffffffff [ 39.202964] RBP: 00007ffca8fb4190 R08: 0000000000000000 R09: 00007fa945f600a0 [ 39.202965] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 39.202966] R13: 00007fa9460dd310 R14: 00007ffca8fb41ac R15: 0000000000000000 [ 39.202970] </TASK> [ 39.202970] ---[ end trace ]--- (cherry picked from commit b88f48f86500bc0b44b4f73ac66d500a40d320ad)

Frequently asked questions

What is CVE-2025-37761?
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix an out-of-bounds shift when invalidating TLB When the size of the range invalidated is larger than rounddown_pow_of_two(ULONG_MAX), The function macro roundup_pow_of_two(length) will hit an out-of-bounds shift [1]. Use a full TLB invalidation for such cases. v2: - Use a define for the range size limit over which we use a full TLB invalidation. (Lucas) - Use a better calculation of the limit. [1]: [ 39.202421] ------------[ cut here ]------------ [ 39.202657] UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 [ 39.202673] shift exponent 64 is too large for 64-bit type 'long unsigned int' [ 39.202688] CPU: 8 UID: 0 PID: 3129 Comm: xe_exec_system_ Tainted: G U 6.14.0+ #10 [ 39.202690] Tainted: [U]=USER [ 39.202690] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 2001 02/01/2023 [ 39.202691] Call Trace: [ 39.202692] <TASK> [ 39.202695] dump_stack_lvl+0x6e/0xa0 [ 39.202699] ubsan_epilogue+0x5/0x30 [ 39.202701] __ubsan_handle_shift_out_of_bounds.cold+0x61/0xe6 [ 39.202705] xe_gt_tlb_invalidation_range.cold+0x1d/0x3a [xe] [ 39.202800] ? find_held_lock+0x2b/0x80 [ 39.202803] ? mark_held_locks+0x40/0x70 [ 39.202806] xe_svm_invalidate+0x459/0x700 [xe] [ 39.202897] drm_gpusvm_notifier_invalidate+0x4d/0x70 [drm_gpusvm] [ 39.202900] __mmu_notifier_release+0x1f5/0x270 [ 39.202905] exit_mmap+0x40e/0x450 [ 39.202912] __mmput+0x45/0x110 [ 39.202914] exit_mm+0xc5/0x130 [ 39.202916] do_exit+0x21c/0x500 [ 39.202918] ? lockdep_hardirqs_on_prepare+0xdb/0x190 [ 39.202920] do_group_exit+0x36/0xa0 [ 39.202922] get_signal+0x8f8/0x900 [ 39.202926] arch_do_signal_or_restart+0x35/0x100 [ 39.202930] syscall_exit_to_user_mode+0x1fc/0x290 [ 39.202932] do_syscall_64+0xa1/0x180 [ 39.202934] ? do_user_addr_fault+0x59f/0x8a0 [ 39.202937] ? lock_release+0xd2/0x2a0 [ 39.202939] ? do_user_addr_fault+0x5a9/0x8a0 [ 39.202942] ? trace_hardirqs_off+0x4b/0xc0 [ 39.202944] ? clear_bhb_loop+0x25/0x80 [ 39.202946] ? clear_bhb_loop+0x25/0x80 [ 39.202947] ? clear_bhb_loop+0x25/0x80 [ 39.202950] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 39.202952] RIP: 0033:0x7fa945e543e1 [ 39.202961] Code: Unable to access opcode bytes at 0x7fa945e543b7. [ 39.202962] RSP: 002b:00007ffca8fb4170 EFLAGS: 00000293 [ 39.202963] RAX: 000000000000003d RBX: 0000000000000000 RCX: 00007fa945e543e3 [ 39.202964] RDX: 0000000000000000 RSI: 00007ffca8fb41ac RDI: 00000000ffffffff [ 39.202964] RBP: 00007ffca8fb4190 R08: 0000000000000000 R09: 00007fa945f600a0 [ 39.202965] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 39.202966] R13: 00007fa9460dd310 R14: 00007ffca8fb41ac R15: 0000000000000000 [ 39.202970] </TASK> [ 39.202970] ---[ end trace ]--- (cherry picked from commit b88f48f86500bc0b44b4f73ac66d500a40d320ad)
How severe is CVE-2025-37761?
CVE-2025-37761 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-37761 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-37761?
CVE-2025-37761 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-37761?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-37761 have an EU (EUVD) identifier?
Yes. CVE-2025-37761 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13052.
When was CVE-2025-37761 published?
CVE-2025-37761 was published on 2025-05-01 and last updated on 2026-06-17.

References

Affected products (2)

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