154 lines
7.8 KiB
JSON
154 lines
7.8 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-2026-46118",
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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": "2026-05-13T15:03:33.098Z",
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"datePublished": "2026-05-28T09:35:33.635Z",
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"dateUpdated": "2026-10-15T10:07:24.840Z"
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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": "2026-10-15T10:07:24.840Z"
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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\npseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()\n\ncommit 6d3789d347a7 (\"papr-hvpipe: convert papr_hvpipe_dev_create_handle() to FD_PREPARE()\"),\nchanged the create handle to FD_PREPARE(), but it caused kernel\nnull-ptr-deref because after call to retain_and_null_ptr(src_info),\nsrc_info is re-used for adding it to the global list.\n\nGetting the following kernel panic in papr_hvpipe_dev_create_handle()\nwhen trying to add src_info to the list.\n Kernel attempted to write user page (0) - exploit attempt? (uid: 0)\n BUG: Kernel NULL pointer dereference on write at 0x00000000\n Faulting instruction address: 0xc0000000001b44a0\n Oops: Kernel access of bad area, sig: 11 [#1]\n ...\n Call Trace:\n papr_hvpipe_dev_ioctl+0x1f4/0x48c (unreliable)\n sys_ioctl+0x528/0x1064\n system_call_exception+0x128/0x360\n system_call_vectored_common+0x15c/0x2ec\n\nNow, the error handling with FD_PREPARE's file cleanup and __free(kfree) auto\ncleanup is getting too convoluted. This is mainly because we need to\nensure only 1 user get the srcID handle. To simplify this, we allocate\nprepare the src_info in the beginning and add it to the global list\nunder a spinlock after checking that no duplicates exist.\n\nThis simplify the error handling where if the FD_ADD fails, we can\nsimply remove the src_info from the list and consume any pending msg in\nhvpipe to be cleared, after src_info became visible in the global list."
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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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"arch/powerpc/platforms/pseries/papr-hvpipe.c"
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],
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"versions": [
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{
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"version": "09c15bbbed533903e600660ea09098b3b0524f48",
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"lessThan": "735439394dde8462f9b50566727fbe333beaadaf",
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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": "6d3789d347a7af5c4b0b2da3af47b8d9da607ab2",
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"lessThan": "cf51bec1560f8bf115d1476f60335f9d90e110b0",
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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": "6d3789d347a7af5c4b0b2da3af47b8d9da607ab2",
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"lessThan": "1b9f7aafa44f5ce852c00509104d10fd9eb0f402",
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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": "51a321dec76f7e39403a0574897a4409a8a700c4",
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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": "6.18.32",
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"lessThan": "6.18.33",
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"status": "affected",
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"versionType": "semver"
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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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"arch/powerpc/platforms/pseries/papr-hvpipe.c"
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],
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"versions": [
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{
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"version": "6.19",
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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": "6.19",
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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": "6.18.33",
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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": "7.0.7",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "6.18.32",
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"versionEndExcluding": "6.18.33"
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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": "6.19",
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"versionEndExcluding": "7.0.7"
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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": "6.19",
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"versionEndExcluding": "7.1"
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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/735439394dde8462f9b50566727fbe333beaadaf"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf51bec1560f8bf115d1476f60335f9d90e110b0"
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},
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{
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"url": "https://git.kernel.org/stable/c/1b9f7aafa44f5ce852c00509104d10fd9eb0f402"
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}
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],
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"title": "pseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()",
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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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}
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} |