CVE-2026-64165 (GCVE-0-2026-64165)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
ARM: integrator: Fix early initialization
Summary
In the Linux kernel, the following vulnerability has been resolved: ARM: integrator: Fix early initialization Starting with commit bdb249fce9ad4 ("ARM: integrator: read counter using syscon/regmap"), intcp_init_early calls syscon_regmap_lookup_by_compatible which in turn calls of_syscon_register. This function allocates memory. Since the memory management code has not been initialized at that time, the call always fails. It either returns -ENOMEM or crashes as follows. Unable to handle kernel NULL pointer dereference at virtual address 0000000c when read [0000000c] *pgd=00000000 Internal error: Oops: 5 [#1] ARM Modules linked in: CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT Hardware name: ARM Integrator/CP (Device Tree) PC is at __kmalloc_cache_noprof+0xec/0x39c LR is at __kmalloc_cache_noprof+0x34/0x39c ... Call trace: __kmalloc_cache_noprof from of_syscon_register+0x7c/0x310 of_syscon_register from device_node_get_regmap+0xa4/0xb0 device_node_get_regmap from intcp_init_early+0xc/0x40 intcp_init_early from start_kernel+0x60/0x688 start_kernel from 0x0 The crash is seen due to a dereferenced pointer which is not supposed to be NULL but is NULL if the memory management subsystem has not been initialized. The crash is not seen with all versions of gcc. Some versions such as gcc 9.x apparently do not dereference the pointer, presumably if tracing is disabled. The problem has been reproduced with gcc 10.x, 11.x, and 13.x. Either case, if the crash is not seen, the call to syscon_regmap_lookup_by_compatible returns -ENOMEM, and sched_clock_register is never called. Fix the problem by moving the early initialization code into the standard machine initialization code.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 22c738fb51f2d8b23ddff5cc0ccb2dd685bb39d3 (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 812103fb6da904bd03d62cf6a9826e537318ceed (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 6624854554c4c2bdfed3559e5c11bb03b16e7bd1 (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 508b1193d63b5e073a3fe103eeb785fcba2d368c (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 58a112b0973f6cd6bcb8c503d1ff88be411ed0f0 (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < e984dc22e2c24dc34d6728e338c82b1ce7862753 (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 33ad014abec90f37dade0e00560f28864187e21a (git)
Affected: bdb249fce9ad44aab340be3b7a77060114f7193b , < 90d77b30a666049ad24df463f52e5d529c44e8cd (git)
Create a notification for this product.
Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: integrator: Fix early initialization\n\nStarting with commit bdb249fce9ad4 (\"ARM: integrator: read counter using\nsyscon/regmap\"), intcp_init_early calls syscon_regmap_lookup_by_compatible\nwhich in turn calls of_syscon_register. This function allocates memory.\nSince the memory management code has not been initialized at that time,\nthe call always fails. It either returns -ENOMEM or crashes as follows.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000c when read\n[0000000c] *pgd=00000000\nInternal error: Oops: 5 [#1] ARM\nModules linked in:\nCPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT\nHardware name: ARM Integrator/CP (Device Tree)\nPC is at __kmalloc_cache_noprof+0xec/0x39c\nLR is at __kmalloc_cache_noprof+0x34/0x39c\n...\nCall trace:\n __kmalloc_cache_noprof from of_syscon_register+0x7c/0x310\n of_syscon_register from device_node_get_regmap+0xa4/0xb0\n device_node_get_regmap from intcp_init_early+0xc/0x40\n intcp_init_early from start_kernel+0x60/0x688\n start_kernel from 0x0\n\nThe crash is seen due to a dereferenced pointer which is not supposed to be\nNULL but is NULL if the memory management subsystem has not been\ninitialized. The crash is not seen with all versions of gcc. Some versions\nsuch as gcc 9.x apparently do not dereference the pointer, presumably if\ntracing is disabled. The problem has been reproduced with gcc 10.x, 11.x,\nand 13.x. Either case, if the crash is not seen, the call to\nsyscon_regmap_lookup_by_compatible returns -ENOMEM, and\nsched_clock_register is never called.\n\nFix the problem by moving the early initialization code into the standard\nmachine initialization code."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:40:50.585Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/33ad014abec90f37dade0e00560f28864187e21a"
        },
        {
          "url": "https://git.kernel.org/stable/c/90d77b30a666049ad24df463f52e5d529c44e8cd"
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      ],
      "title": "ARM: integrator: Fix early initialization",
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    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-07-19T15:40:50.585Z",
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It either returns -ENOMEM or crashes as follows.\\n\\nUnable to handle kernel NULL pointer dereference at virtual address 0000000c when read\\n[0000000c] *pgd=00000000\\nInternal error: Oops: 5 [#1] ARM\\nModules linked in:\\nCPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT\\nHardware name: ARM Integrator/CP (Device Tree)\\nPC is at __kmalloc_cache_noprof+0xec/0x39c\\nLR is at __kmalloc_cache_noprof+0x34/0x39c\\n...\\nCall trace:\\n __kmalloc_cache_noprof from of_syscon_register+0x7c/0x310\\n of_syscon_register from device_node_get_regmap+0xa4/0xb0\\n device_node_get_regmap from intcp_init_early+0xc/0x40\\n intcp_init_early from start_kernel+0x60/0x688\\n start_kernel from 0x0\\n\\nThe crash is seen due to a dereferenced pointer which is not supposed to be\\nNULL but is NULL if the memory management subsystem has not been\\ninitialized. The crash is not seen with all versions of gcc. Some versions\\nsuch as gcc 9.x apparently do not dereference the pointer, presumably if\\ntracing is disabled. The problem has been reproduced with gcc 10.x, 11.x,\\nand 13.x. Either case, if the crash is not seen, the call to\\nsyscon_regmap_lookup_by_compatible returns -ENOMEM, and\\nsched_clock_register is never called.\\n\\nFix the problem by moving the early initialization code into the standard\\nmachine initialization code.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/arm/mach-versatile/integrator_cp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"22c738fb51f2d8b23ddff5cc0ccb2dd685bb39d3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"812103fb6da904bd03d62cf6a9826e537318ceed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"6624854554c4c2bdfed3559e5c11bb03b16e7bd1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"508b1193d63b5e073a3fe103eeb785fcba2d368c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"58a112b0973f6cd6bcb8c503d1ff88be411ed0f0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"e984dc22e2c24dc34d6728e338c82b1ce7862753\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"33ad014abec90f37dade0e00560f28864187e21a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdb249fce9ad44aab340be3b7a77060114f7193b\",\"lessThan\":\"90d77b30a666049ad24df463f52e5d529c44e8cd\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/arm/mach-versatile/integrator_cp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.258\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.142\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.92\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.34\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/22c738fb51f2d8b23ddff5cc0ccb2dd685bb39d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/33ad014abec90f37dade0e00560f28864187e21a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/508b1193d63b5e073a3fe103eeb785fcba2d368c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58a112b0973f6cd6bcb8c503d1ff88be411ed0f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6624854554c4c2bdfed3559e5c11bb03b16e7bd1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/812103fb6da904bd03d62cf6a9826e537318ceed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/90d77b30a666049ad24df463f52e5d529c44e8cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e984dc22e2c24dc34d6728e338c82b1ce7862753\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.