CVE-2024-26664

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There is no network, adjacent-network, or removable-device path into this hwmon driver.\nAC:L - On an affected target (an Intel package with more than 128 cores, e.g. 144-core Sierra Forest sockets) the out-of-bounds write is fully deterministic \u2014 it fires on every boot and on every CPU-online cycle once the IDA index passes 127, with no race, no grooming, and no per-attempt uncertainty. Target-configuration/hardware dependence is not AC:H under CVSS 3.1.\nPR:L - The driver performs no capability or credential check anywhere on the `coretemp_cpu_online()` \u2192 `coretemp_add_core()` \u2192 `create_core_data()` path; the corruption occurs during ordinary CPU bring-up with no privilege held at all, and the runtime re-trigger is CPU hotplug. Scoring the more severe of the arguable options (boot/module-load-reachable by a low-privileged local presence) rather than requiring full root.\nUI:N - CPU onlining and coretemp initialization happen automatically as part of normal system startup and hotplug handling. No victim action of any kind is required.\nS:U - The out-of-bounds write corrupts fields inside the kernel's own `struct platform_data` allocation and the follow-on damage stays in kernel slab memory on the same host. No VM, IOMMU, or sandbox security boundary is crossed.\nC:H - Indices 135\u2013138 overwrite `ida.xa.xa_head` two bytes at a time, leaving a near-valid kernel pointer that the next `ida_alloc_range()` dereferences via `xas_find_marked()`/`find_next_zero_bit()`, reading arbitrary kernel slab memory as an `xa_node`/`ida_bitmap`. The corrupted `pd->cpumask` also redirects `rdmsr_on_cpu()` targets for the sysfs temperature readers.\nI:H - This is an out-of-bounds write that clobbers a live kernel pointer, the xarray spinlock and flags, and the CPU mask inside `struct platform_data`. The resulting type confusion lets `__set_bit()` in `ida_alloc_range()` write into misinterpreted kernel memory, and corrupted `core_data[]`/cpumask state can drive bogus `kfree()` and stale-sysfs teardown in `coretemp_remove_core()`.\nA:H - Once `xa_head` is corrupted, the next IDA operation walks a garbage or non-canonical pointer, producing an immediate oops or GP fault; corrupting the xarray spinlock can also wedge the hotplug path. Any of these is a kernel crash or hang."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwmon/coretemp.c"], "versions": [{"version": "4f9dcadc55c21b39b072bb0882362c7edc4340bc", "lessThan": "93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a", "status": "affected", "versionType": "git"}, {"version": "c00cdfc9bd767ee743ad3a4054de17aeb0afcbca", "lessThan": "1eb74c00c9c3b13cb65e508c5d5a2f11afb96b8b", "status": "affected", "versionType": "git"}, {"version": "d9f0159da05df869071164edf0c6d7302efc5eca", "lessThan": "f0da068c75c20ffc5ba28243ff577531dc2af1fd", "status": "affected", "versionType": "git"}, {"version": "30cf0dee372baf9b515f2d9c7218f905fddf3cdb", "lessThan": "a16afec8e83c56b14a4a73d2e3fb8eec3a8a057e", "status": "affected", "versionType": "git"}, {"version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": 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"6.6.17", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.5", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.264", "versionEndExcluding": "4.19.307"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.221", "versionEndExcluding": "5.4.269"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.152", "versionEndExcluding": "5.10.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.76", "versionEndExcluding": "5.15.149"}, 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There is no network, adjacent-network, or removable-device path into this hwmon driver.\nAC:L - On an affected target (an Intel package with more than 128 cores, e.g. 144-core Sierra Forest sockets) the out-of-bounds write is fully deterministic \u2014 it fires on every boot and on every CPU-online cycle once the IDA index passes 127, with no race, no grooming, and no per-attempt uncertainty. Target-configuration/hardware dependence is not AC:H under CVSS 3.1.\nPR:L - The driver performs no capability or credential check anywhere on the `coretemp_cpu_online()` \u2192 `coretemp_add_core()` \u2192 `create_core_data()` path; the corruption occurs during ordinary CPU bring-up with no privilege held at all, and the runtime re-trigger is CPU hotplug. Scoring the more severe of the arguable options (boot/module-load-reachable by a low-privileged local presence) rather than requiring full root.\nUI:N - CPU onlining and coretemp initialization happen automatically as part of normal system startup and hotplug handling. No victim action of any kind is required.\nS:U - The out-of-bounds write corrupts fields inside the kernel's own `struct platform_data` allocation and the follow-on damage stays in kernel slab memory on the same host. No VM, IOMMU, or sandbox security boundary is crossed.\nC:H - Indices 135\u2013138 overwrite `ida.xa.xa_head` two bytes at a time, leaving a near-valid kernel pointer that the next `ida_alloc_range()` dereferences via `xas_find_marked()`/`find_next_zero_bit()`, reading arbitrary kernel slab memory as an `xa_node`/`ida_bitmap`. The corrupted `pd->cpumask` also redirects `rdmsr_on_cpu()` targets for the sysfs temperature readers.\nI:H - This is an out-of-bounds write that clobbers a live kernel pointer, the xarray spinlock and flags, and the CPU mask inside `struct platform_data`. The resulting type confusion lets `__set_bit()` in `ida_alloc_range()` write into misinterpreted kernel memory, and corrupted `core_data[]`/cpumask state can drive bogus `kfree()` and stale-sysfs teardown in `coretemp_remove_core()`.\nA:H - Once `xa_head` is corrupted, the next IDA operation walks a garbage or non-canonical pointer, producing an immediate oops or GP fault; corrupting the xarray spinlock can also wedge the hotplug path. Any of these is a kernel crash or hang."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4f9dcadc55c21b39b072bb0882362c7edc4340bc", "lessThan": "93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a", "versionType": "git"}, {"status": "affected", "version": "c00cdfc9bd767ee743ad3a4054de17aeb0afcbca", "lessThan": "1eb74c00c9c3b13cb65e508c5d5a2f11afb96b8b", "versionType": "git"}, {"status": "affected", "version": "d9f0159da05df869071164edf0c6d7302efc5eca", "lessThan": "f0da068c75c20ffc5ba28243ff577531dc2af1fd", "versionType": "git"}, {"status": "affected", "version": "30cf0dee372baf9b515f2d9c7218f905fddf3cdb", "lessThan": "a16afec8e83c56b14a4a73d2e3fb8eec3a8a057e", "versionType": "git"}, {"status": "affected", "version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": "9bce69419271eb8b2b3ab467387cb59c99d80deb", "versionType": "git"}, {"status": "affected", 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{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHBA-2024:3983", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.22.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-06-19T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHBA-2024:3983", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.22.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-06-19T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: hwmon: (coretemp) Fix out-of-bounds memory access", "id": "2272791", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272791"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H", "status": "verified"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nhwmon: (coretemp) Fix out-of-bounds memory access\nFix a bug that pdata->cpu_map[] is set before out-of-bounds check.\nThe problem might be triggered on systems with more than 128 cores per\npackage."], "name": "CVE-2024-26664", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26664\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26664\nhttps://lore.kernel.org/linux-cve-announce/2024040223-CVE-2024-26664-03db@gregkh/T"], "threat_severity": "Low"}

{}