282 lines
15 KiB
JSON
282 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80652",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.779Z",
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"datePublished": "2026-08-28T06:49:00.093Z",
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"dateUpdated": "2026-11-06T17:05:52.513Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-28T06:49:00.093Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Treat zero-length cert chain as query for blob lengths\n\nWhen handling a PDH export, treat a zero-length userspace cert chain buffer\nas a request to query the length of the relevant blobs. Failure to account\nfor the zero-length buffer trips a BUG_ON() when running with\nCONFIG_DEBUG_VIRTUAL=y due to trying to get the physical address of the\nZERO_SIZE_PTR (returned by kzalloc() on the bogus allocation).\n\n kernel BUG at arch/x86/mm/physaddr.c:28 !\n Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\n CPU: 30 UID: 0 PID: 28580 Comm: syz.2.18 Kdump: loaded\n Tainted: G W 6.18.16-smp-DEV #1 NONE\n Tainted: [W]=WARN\n Hardware name: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 12.62.0-0 11/19/2025\n RIP: 0010:__phys_addr+0x16a/0x180 arch/x86/mm/physaddr.c:28\n RSP: 0018:ffffc9008329fc80 EFLAGS: 00010293\n RAX: ffffffff8179110a RBX: 0000778000000010 RCX: ffff8884e6992600\n RDX: 0000000000000000 RSI: 0000000080000010 RDI: 0000778000000010\n RBP: ffffc9008329fdf0 R08: 0000000000000dc0 R09: 00000000ffffffff\n R10: dffffc0000000000 R11: fffffbfff126d297 R12: dffffc0000000000\n R13: 1ffff92010653fc8 R14: 0000000080000010 R15: dffffc0000000000\n FS: 0000555556bec9c0(0000) GS:ffff88aa4ce1c000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fd3159e7000 CR3: 00000004fbc44000 CR4: 0000000000350ef0\n Call Trace:\n <TASK>\n [<ffffffff853d3869>] sev_ioctl_do_pdh_export+0x559/0x7a0 drivers/crypto/ccp/sev-dev.c:2308\n [<ffffffff853d1fdd>] sev_ioctl+0x2cd/0x480 drivers/crypto/ccp/sev-dev.c:2556\n [<ffffffff82549ebc>] vfs_ioctl fs/ioctl.c:52 [inline]\n [<ffffffff82549ebc>] __do_sys_ioctl fs/ioctl.c:598 [inline]\n [<ffffffff82549ebc>] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584\n [<ffffffff8630115f>] do_syscall_x64 arch/x86/entry/syscall_64.c:64 [inline]\n [<ffffffff8630115f>] do_syscall_64+0x9f/0xf40 arch/x86/entry/syscall_64.c:98\n [<ffffffff81000136>] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7fd3158eac39\n </TASK>\n\nThankfully, the bug is benign outside of CONFIG_DEBUG_VIRTUAL=y as getting\nthe physical address is just arithmetic, and the PSP errors out before\ntrying to write to the garbage address (which it must, otherwise querying\nthe blob lengths would clobber memory at pfn=0)."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/crypto/ccp/sev-dev.c"
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],
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"versions": [
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "1c587f30c6242cc37b3d6ee6d91daef84e51633f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "13b4d5e055d344e34b864bced0a591ceaac7ad81",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "94344bc7c9d70b04be718d841b92873aa3ea8191",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "50c3c7df4f26d36b30bc950a7d780f7029fd52f8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "ee717e73ab47253c82c134c342e32fcdfcfccd87",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "21650fe221ea9b72809140b691589dde8bff3eab",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "d88071a6ce091272726bedda26c105b85b23705f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76a2b524a4b1d6dc0f2421f9854a01d55d5e5436",
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"lessThan": "ef8c9dacda2871accd64e3eda951fef6b788b1ea",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/crypto/ccp/sev-dev.c"
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],
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"versions": [
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{
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"version": "4.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.40",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "5.10.261"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "5.15.212"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "6.1.178"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "6.6.145"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "6.18.40"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "7.1.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.16",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1c587f30c6242cc37b3d6ee6d91daef84e51633f"
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},
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{
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"url": "https://git.kernel.org/stable/c/13b4d5e055d344e34b864bced0a591ceaac7ad81"
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},
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{
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"url": "https://git.kernel.org/stable/c/94344bc7c9d70b04be718d841b92873aa3ea8191"
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},
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{
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"url": "https://git.kernel.org/stable/c/50c3c7df4f26d36b30bc950a7d780f7029fd52f8"
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},
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{
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"url": "https://git.kernel.org/stable/c/ee717e73ab47253c82c134c342e32fcdfcfccd87"
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},
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{
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"url": "https://git.kernel.org/stable/c/21650fe221ea9b72809140b691589dde8bff3eab"
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},
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{
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"url": "https://git.kernel.org/stable/c/d88071a6ce091272726bedda26c105b85b23705f"
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},
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{
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"url": "https://git.kernel.org/stable/c/ef8c9dacda2871accd64e3eda951fef6b788b1ea"
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}
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],
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"title": "crypto: ccp - Treat zero-length cert chain as query for blob lengths",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-80652",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T17:02:28.395791Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-06T17:05:52.513Z"
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}
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}
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]
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}
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} |