In the Linux kernel, the following vulnerability has been resolved:
arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays
Commit a5951389e58d ("arm64: errata: Add newer ARM cores to the
spectre_bhb_loop_affected() lists") added some additional CPUs to the
Spectre-BHB workaround, including some new arrays for designs that
require new 'k' values for the workaround to be effective.
Unfortunately, the new arrays omitted the sentinel entry and so
is_midr_in_range_list() will walk off the end when it doesn't find a
match. With UBSAN enabled, this leads to a crash during boot when
is_midr_in_range_list() is inlined (which was more common prior to
c8c2647e69be ("arm64: Make _midr_in_range_list() an exported
function")):
| Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP
| pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
| pc : spectre_bhb_loop_affected+0x28/0x30
| lr : is_spectre_bhb_affected+0x170/0x190
| [...]
| Call trace:
| spectre_bhb_loop_affected+0x28/0x30
| update_cpu_capabilities+0xc0/0x184
| init_cpu_features+0x188/0x1a4
| cpuinfo_store_boot_cpu+0x4c/0x60
| smp_prepare_boot_cpu+0x38/0x54
| start_kernel+0x8c/0x478
| __primary_switched+0xc8/0xd4
| Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020)
| ---[ end trace 0000000000000000 ]---
| Kernel panic - not syncing: aarch64 BRK: Fatal exception
Add the missing sentinel entries.
References
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
History
10 Nov 2025, 20:24
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c - Patch | |
| References | () https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160 - Patch | |
| References | () https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c - Patch | |
| References | () https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be - Patch | |
| References | () https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3 - Patch | |
| References | () https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861 - Patch | |
| References | () https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72 - Patch | |
| References | () https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html - Mailing List, Third Party Advisory | |
| CWE | CWE-476 | |
| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15.181:*:*:*:*:*:*:* |
03 Nov 2025, 20:18
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
27 Jun 2025, 11:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| Summary |
|
20 May 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-20 16:15
Updated : 2025-11-10 20:24
NVD link : CVE-2025-37929
Mitre link : CVE-2025-37929
CVE.ORG link : CVE-2025-37929
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference