CVE-2025-37929 (GCVE-0-2025-37929)
Vulnerability from cvelistv5
Published
2025-05-20 15:21
Modified
2025-11-03 19:57
Severity ?
Summary
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
Impacted products
Vendor Product Version
Linux Linux Version: 4a2f3d8260a996bc43dcc1ce49ac594db54f4b3e
Version: 46e22de65eb45a67a68ddfe9301f79b0c3821ca8
Version: a53b3599d9bf9375f9033f2aa1fa92714fb1d0f0
Version: 4117975672c4743cffaf32b6fd018cfacd1b420e
Version: 9ca4fe357464bbdad0db67985275f2694df8dab5
Version: e060dbb7393ed7bdfba6b5ea7566f9ef87381cfb
Version: a5951389e58d2e816eed3dbec5877de9327fd881
Version: ed681e90fb244aa883b918c4d8be2614e816c6df
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   Linux Linux Version: 5.15.181   ≤
Version: 6.1.135   ≤
Version: 6.6.88   ≤
Version: 6.12.24   ≤
Version: 6.14.3   ≤
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With UBSAN enabled, this leads to a crash during boot when\\nis_midr_in_range_list() is inlined (which was more common prior to\\nc8c2647e69be (\\\"arm64: Make \u00a0_midr_in_range_list() an exported\\nfunction\\\")):\\n\\n |  Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP\\n |  pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n |  pc : spectre_bhb_loop_affected+0x28/0x30\\n |  lr : is_spectre_bhb_affected+0x170/0x190\\n | [...]\\n |  Call trace:\\n |   spectre_bhb_loop_affected+0x28/0x30\\n |   update_cpu_capabilities+0xc0/0x184\\n |   init_cpu_features+0x188/0x1a4\\n |   cpuinfo_store_boot_cpu+0x4c/0x60\\n |   smp_prepare_boot_cpu+0x38/0x54\\n |   start_kernel+0x8c/0x478\\n |   __primary_switched+0xc8/0xd4\\n |  Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020)\\n |  ---[ end trace 0000000000000000 ]---\\n |  Kernel panic - not syncing: aarch64 BRK: Fatal exception\\n\\nAdd the missing sentinel entries.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64: errata: A\u00f1adir centinelas faltantes a las matrices MIDR de Spectre-BHB. El commit a5951389e58d (\\\"arm64: errata: A\u00f1adir nuevos n\u00facleos ARM a las listas spectre_bhb_loop_affected()\\\") a\u00f1adi\u00f3 CPU adicionales a la soluci\u00f3n alternativa de Spectre-BHB, incluyendo nuevas matrices para dise\u00f1os que requieren nuevos valores \u0027k\u0027 para que la soluci\u00f3n sea efectiva. Desafortunadamente, las nuevas matrices omitieron la entrada de centinela, por lo que is_midr_in_range_list() se desviar\u00e1 al final si no encuentra una coincidencia. Con UBSAN habilitado, esto provoca un fallo durante el arranque cuando is_midr_in_range_list() est\u00e1 en l\u00ednea (lo cual era m\u00e1s com\u00fan antes de c8c2647e69be (\\\"arm64: Convertir _midr_in_range_list() en una funci\u00f3n exportada\\\")): | Error interno: 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 | [...] | Rastreo de llamadas: | 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 | C\u00f3digo: 6b09011f 54000061 52801080 d65f03c0 (d4200020) | ---[ fin del seguimiento 000000000000000 ]--- | P\u00e1nico del kernel - no sincroniza: aarch64 BRK: Excepci\u00f3n fatal Agregue las entradas centinela faltantes.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.135\",\"versionEndExcluding\":\"6.1.138\",\"matchCriteriaId\":\"E787BD46-482C-4E09-821E-8028365B76A6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.88\",\"versionEndExcluding\":\"6.6.90\",\"matchCriteriaId\":\"2FFB790F-1BC6-4932-B4D4-581AC5AF0DDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12.24\",\"versionEndExcluding\":\"6.12.28\",\"matchCriteriaId\":\"9EC7439E-D071-428D-AD6A-332044906923\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13.12\",\"versionEndExcluding\":\"6.14\",\"matchCriteriaId\":\"A1F1E5FF-68CB-46CE-BC4F-8E19FA72A921\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.14.3\",\"versionEndExcluding\":\"6.14.6\",\"matchCriteriaId\":\"608839B0-DD0C-4FDA-9311-A47D53598DBC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.15.181:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AD65585E-43A5-4D25-8124-53D7300CFFAD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D465631-2980-487A-8E65-40AE2B9F8ED1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4C9D071F-B28E-46EC-AC61-22B913390211\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"13FC0DDE-E513-465E-9E81-515702D49B74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"8C7B5B0E-4EEB-48F5-B4CF-0935A7633845\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing 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  }
}


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