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vuln-cve/data/2025/68xxx/CVE-2025-68231.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-68231",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-12-16T13:41:40.258Z",
"datePublished": "2025-12-16T13:57:23.712Z",
"dateUpdated": "2026-05-11T21:49:21.992Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:49:21.992Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempool: fix poisoning order>0 pages with HIGHMEM\n\nThe kernel test has reported:\n\n BUG: unable to handle page fault for address: fffba000\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page\n *pde = 03171067 *pte = 00000000\n Oops: Oops: 0002 [#1]\n CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.18.0-rc2-00031-gec7f31b2a2d3 #1 NONE a1d066dfe789f54bc7645c7989957d2bdee593ca\n Tainted: [T]=RANDSTRUCT\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n EIP: memset (arch/x86/include/asm/string_32.h:168 arch/x86/lib/memcpy_32.c:17)\n Code: a5 8b 4d f4 83 e1 03 74 02 f3 a4 83 c4 04 5e 5f 5d 2e e9 73 41 01 00 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c6 89 d0 89 f7 <f3> aa 89 f0 5e 5f 5d 2e e9 53 41 01 00 cc cc cc 55 89 e5 53 57 56\n EAX: 0000006b EBX: 00000015 ECX: 001fefff EDX: 0000006b\n ESI: fffb9000 EDI: fffba000 EBP: c611fbf0 ESP: c611fbe8\n DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010287\n CR0: 80050033 CR2: fffba000 CR3: 0316e000 CR4: 00040690\n Call Trace:\n poison_element (mm/mempool.c:83 mm/mempool.c:102)\n mempool_init_node (mm/mempool.c:142 mm/mempool.c:226)\n mempool_init_noprof (mm/mempool.c:250 (discriminator 1))\n ? mempool_alloc_pages (mm/mempool.c:640)\n bio_integrity_initfn (block/bio-integrity.c:483 (discriminator 8))\n ? mempool_alloc_pages (mm/mempool.c:640)\n do_one_initcall (init/main.c:1283)\n\nChristoph found out this is due to the poisoning code not dealing\nproperly with CONFIG_HIGHMEM because only the first page is mapped but\nthen the whole potentially high-order page is accessed.\n\nWe could give up on HIGHMEM here, but it's straightforward to fix this\nwith a loop that's mapping, poisoning or checking and unmapping\nindividual pages."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/mempool.c"
],
"versions": [
{
"version": "bdfedb76f4f5aa5e37380e3b71adee4a39f30fc6",
"lessThan": "ea4131665107e66ece90e66bcec1a2f1246cbd41",
"status": "affected",
"versionType": "git"
},
{
"version": "bdfedb76f4f5aa5e37380e3b71adee4a39f30fc6",
"lessThan": "19de79aaea33ee1ea058c8711b3b2b4a7e4decd4",
"status": "affected",
"versionType": "git"
},
{
"version": "bdfedb76f4f5aa5e37380e3b71adee4a39f30fc6",
"lessThan": "6a13b56537e7b0d97f4bb74e8038ce471f9770d7",
"status": "affected",
"versionType": "git"
},
{
"version": "bdfedb76f4f5aa5e37380e3b71adee4a39f30fc6",
"lessThan": "a79e49e1704367b635edad1479db23d7cf1fb71a",
"status": "affected",
"versionType": "git"
},
{
"version": "bdfedb76f4f5aa5e37380e3b71adee4a39f30fc6",
"lessThan": "ec33b59542d96830e3c89845ff833cf7b25ef172",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/mempool.c"
],
"versions": [
{
"version": "4.1",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.1",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.159",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.118",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.60",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.17.10",
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18",
"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": "4.1",
"versionEndExcluding": "6.1.159"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.1",
"versionEndExcluding": "6.6.118"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.1",
"versionEndExcluding": "6.12.60"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.1",
"versionEndExcluding": "6.17.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.1",
"versionEndExcluding": "6.18"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/ea4131665107e66ece90e66bcec1a2f1246cbd41"
},
{
"url": "https://git.kernel.org/stable/c/19de79aaea33ee1ea058c8711b3b2b4a7e4decd4"
},
{
"url": "https://git.kernel.org/stable/c/6a13b56537e7b0d97f4bb74e8038ce471f9770d7"
},
{
"url": "https://git.kernel.org/stable/c/a79e49e1704367b635edad1479db23d7cf1fb71a"
},
{
"url": "https://git.kernel.org/stable/c/ec33b59542d96830e3c89845ff833cf7b25ef172"
}
],
"title": "mm/mempool: fix poisoning order>0 pages with HIGHMEM",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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