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rlsa-2026:49211
Vulnerability from osv_rocky
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
kernel: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item (CVE-2025-68211)
-
kernel: isofs: validate Rock Ridge CE continuation extent against volume size (CVE-2026-46303)
-
kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle ()
Bug Fix(es) and Enhancement(s):
-
[DELL 10.2 FEAT] [LATE-ADD] - Include support for Ghostrider PTL mini config SKU with Realtek IC Solution [rhel-10.2.z] (JIRA:Rocky Linux-185669)
-
dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() [rhel-10.2.z] (JIRA:Rocky Linux-212063)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
{
"affected": [
{
"package": {
"ecosystem": "Rocky Linux:10",
"name": "kernel",
"purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-10\u0026epoch=0"
},
"ranges": [
{
"database_specific": {
"yum_repository": "BaseOS"
},
"events": [
{
"introduced": "0"
},
{
"fixed": "0:6.12.0-211.42.1.el10_2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [
{
"name": "Rocky Enterprise Software Foundation"
},
{
"name": "Red Hat"
}
],
"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item (CVE-2025-68211)\n\n* kernel: isofs: validate Rock Ridge CE continuation extent against volume size (CVE-2026-46303)\n\n* kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle ()\n\nBug Fix(es) and Enhancement(s):\n\n* [DELL 10.2 FEAT] [LATE-ADD] - Include support for Ghostrider PTL mini config SKU with Realtek IC Solution [rhel-10.2.z] (JIRA:Rocky Linux-185669)\n\n* dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() [rhel-10.2.z] (JIRA:Rocky Linux-212063)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
"id": "RLSA-2026:49211",
"modified": "2026-08-06T06:10:01.256365Z",
"published": "2026-08-02T00:06:56.595907Z",
"references": [
{
"type": "ADVISORY",
"url": "https://errata.rockylinux.org/RLSA-2026:49211"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422696"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504052"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486471"
}
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Important: kernel security, bug fix, and enhancement update",
"upstream": [
"CVE-2025-68211",
"CVE-2026-46303",
"CVE-2026-64530"
]
}
CVE-2025-68211 (GCVE-0-2025-68211)
Vulnerability from cvelistv5 – Published: 2025-12-16 13:48 – Updated: 2026-06-11 18:44| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
31dbd01f314364b70c2e026a5793a29a4da8a9dc , < 220cb3e425e17587f560335924cba9f16a842c64
(git)
Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < 10644e8839544dd5699c03c8fb1aeeefc41602fd (git) Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < 67137b715b7db28d82e4ed07a7092c2fa6ba7adb (git) Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < 9c2f8a9b68024e5ebb4813665845ec0a95f2eac3 (git) Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < 74f78421c925b6d17695566f0c5941de57fd44b3 (git) Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < f62973e0767e4fcd6799087787fca08ca2a85b8c (git) Affected: 31dbd01f314364b70c2e026a5793a29a4da8a9dc , < f5548c318d6520d4fa3c5ed6003eeb710763cbc5 (git) |
|
| Linux | Linux |
Affected:
2.6.32
Unaffected: 0 , < 2.6.32 (semver) Unaffected: 5.10.249 , ≤ 5.10.* (semver) Unaffected: 5.15.199 , ≤ 5.15.* (semver) Unaffected: 6.1.161 , ≤ 6.1.* (semver) Unaffected: 6.6.121 , ≤ 6.6.* (semver) Unaffected: 6.12.59 , ≤ 6.12.* (semver) Unaffected: 6.17.9 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
{
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"timestamp": "2026-06-10T20:42:07.997005Z",
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"cpeApplicability": [
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"descriptions": [
{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksm: use range-walk function to jump over holes in scan_get_next_rmap_item\n\nCurrently, scan_get_next_rmap_item() walks every page address in a VMA to\nlocate mergeable pages. This becomes highly inefficient when scanning\nlarge virtual memory areas that contain mostly unmapped regions, causing\nksmd to use large amount of cpu without deduplicating much pages.\n\nThis patch replaces the per-address lookup with a range walk using\nwalk_page_range(). The range walker allows KSM to skip over entire\nunmapped holes in a VMA, avoiding unnecessary lookups. This problem was\npreviously discussed in [1].\n\nConsider the following test program which creates a 32 TiB mapping in the\nvirtual address space but only populates a single page:\n\n#include \u003cunistd.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003csys/mman.h\u003e\n\n/* 32 TiB */\nconst size_t size = 32ul * 1024 * 1024 * 1024 * 1024;\n\nint main() {\n char *area = mmap(NULL, size, PROT_READ | PROT_WRITE,\n MAP_NORESERVE | MAP_PRIVATE | MAP_ANON, -1, 0);\n\n if (area == MAP_FAILED) {\n perror(\"mmap() failed\\n\");\n return -1;\n }\n\n /* Populate a single page such that we get an anon_vma. */\n *area = 0;\n\n /* Enable KSM. */\n madvise(area, size, MADV_MERGEABLE);\n pause();\n return 0;\n}\n\n$ ./ksm-sparse \u0026\n$ echo 1 \u003e /sys/kernel/mm/ksm/run \n\nWithout this patch ksmd uses 100% of the cpu for a long time (more then 1\nhour in my test machine) scanning all the 32 TiB virtual address space\nthat contain only one mapped page. This makes ksmd essentially deadlocked\nnot able to deduplicate anything of value. With this patch ksmd walks\nonly the one mapped page and skips the rest of the 32 TiB virtual address\nspace, making the scan fast using little cpu."
}
],
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"url": "https://git.kernel.org/stable/c/f5548c318d6520d4fa3c5ed6003eeb710763cbc5"
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"cveId": "CVE-2025-68211",
"datePublished": "2025-12-16T13:48:37.959Z",
"dateReserved": "2025-12-16T13:41:40.256Z",
"dateUpdated": "2026-06-11T18:44:19.687Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-46303 (GCVE-0-2026-46303)
Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-08-05 12:31| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
f54e18f1b831c92f6512d2eedb224cd63d607d3d , < 8356fb821016797f5677cbeee5ddc0d32a95b4be
(git)
Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < d582e12378bc1637f337622feef762f53c43fd57 (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9 (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < c9b37c8b73f6368e4750e5ccb0632c380b43c6e5 (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < 22b36fa081f38ab397c7697f9d539211b51a0cfc (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < e69da8eeab74b4f4505024c38a17bce060fe7df8 (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < ef048470c90bc8c1b8318bb2ce329da9ef64b9fe (git) Affected: f54e18f1b831c92f6512d2eedb224cd63d607d3d , < a36d990f591320e9dd379ab30063ebfe91d47e1f (git) Affected: 08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56 (git) Affected: 212c4d33ca83e2144064fe9c2911607fbed5386f (git) Affected: 96e44adce250199ec9b2b928be66365779ff1b59 (git) Affected: 1fe5620fcd6c2f0a4a927ee10c8e53196da392f3 (git) Affected: fbce0d7dc8965c9fb8d411862040239d4a768c71 (git) Affected: 8190393a88f2b0321263a54f2a9eb5a2aa43be7e (git) Affected: 486aa789eadcf44ed87f972b209299c516454693 (git) Affected: b6d20edb6e7cedb4eedb9e0193d20dd488ebae84 (git) Affected: 2.6.32.66 , < 2.6.33 (semver) Affected: 3.2.67 , < 3.3 (semver) Affected: 3.4.107 , < 3.5 (semver) Affected: 3.10.64 , < 3.11 (semver) Affected: 3.12.36 , < 3.13 (semver) Affected: 3.14.28 , < 3.15 (semver) Affected: 3.17.8 , < 3.18 (semver) Affected: 3.18.2 , < 3.19 (semver) |
|
| Linux | Linux |
Affected:
3.19
Unaffected: 0 , < 3.19 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
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{
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CVE-2026-64530 (GCVE-0-2026-64530)
Vulnerability from cvelistv5 – Published: 2026-07-26 06:28 – Updated: 2026-08-05 12:42| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
172ba7d46c202e679f3ccb10264c67416aaeb1c4 , < 5ed3d6f85991656667059d3fa5a1d683ac58c447
(git)
Affected: 0b5b831122fc3789fff75be433ba3e4dd7b779d4 , < f42e8134a3a1074b834a574d404352f867ba994a (git) Affected: 73f7da5fd124f2cda9161e2e46114915e6e82e97 , < 447d493034a9cf7bf13a2abac86d0573d907ec2f (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < e1270e69dcf2c3512c453484178f2e9dc0db3f05 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < 2140c2f3f2e7b066e1ae616ede8856cafd8015e9 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < e28aedab9488343924d227b5a896faed67ce84d5 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < a8a02897f2b479127db261de05cbf0c28b98d159 (git) Affected: f5346df0591d10bc948761ca854b1fae6d2ef441 (git) Affected: 5.15.148 , < 5.15.212 (semver) Affected: 6.1.75 , < 6.1.178 (semver) Affected: 6.6.14 , < 6.6.145 (semver) Affected: 6.7.2 , < 6.8 (semver) |
|
| Linux | Linux |
Affected:
6.8
Unaffected: 0 , < 6.8 (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix) |
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Sightings
| Author | Source | Type | Date | Other |
|---|
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.