143 lines
7.1 KiB
JSON
143 lines
7.1 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-2026-74477",
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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": "2026-08-15T05:44:03.903Z",
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"datePublished": "2026-08-15T12:27:11.938Z",
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"dateUpdated": "2026-08-17T05:20:09.952Z"
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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": "2026-08-17T05:20:09.952Z"
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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\nuprobes: Fix NULL pointer dereference in hprobe_expire()\n\nForking a task that has a pending uretprobe can oops the kernel with a\nNULL pointer dereference in the clone() path:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n Oops: 0002 [#1] SMP NOPTI\n RIP: 0010:hprobe_expire\n CR2: 0000000000000018\n Call Trace:\n uprobe_copy_process\n copy_process\n kernel_clone\n __x64_sys_clone\n do_syscall_64\n entry_SYSCALL_64_after_hwframe\n\nThis was found on real hosts on Meta fleet.\n\nI've got the impression that this is what is happening:\n\n CPU 1 CPU 2 (traced task)\n ----- -------------------\n hit uprobe, prepare_uretprobe():\n hprobe LEASED, refcount >= 1\n uprobe_unregister()\n put_uprobe(): refcount -> 0\n fork() -> dup_utask()\n hprobe_expire(hprobe, true)\n try_get_uprobe() -> NULL\n get_uprobe(NULL) <-- Oops\n\nOnly take the extra reference when the uprobe is non-NULL; a NULL means\nit is gone and is the correct value to return."
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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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"kernel/events/uprobes.c"
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],
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"versions": [
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{
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"version": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
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"lessThan": "3bd35a5e272a1b7a3fb43acad9bdc599281b13fa",
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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": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
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"lessThan": "06c275a6c0a953ef1d763d11a6891fcc69ae2ac0",
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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": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
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"lessThan": "cc679d7a6303e84d769f2afcde1fc51c51f127cd",
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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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"kernel/events/uprobes.c"
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],
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"versions": [
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{
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"version": "6.13",
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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": "6.13",
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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": "6.18.44",
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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": "7.1.8",
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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": "6.13",
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"versionEndExcluding": "6.18.44"
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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": "6.13",
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"versionEndExcluding": "7.1.8"
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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": "6.13",
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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/3bd35a5e272a1b7a3fb43acad9bdc599281b13fa"
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},
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{
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"url": "https://git.kernel.org/stable/c/06c275a6c0a953ef1d763d11a6891fcc69ae2ac0"
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},
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{
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"url": "https://git.kernel.org/stable/c/cc679d7a6303e84d769f2afcde1fc51c51f127cd"
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}
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],
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"title": "uprobes: Fix NULL pointer dereference in hprobe_expire()",
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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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} |