237 lines
12 KiB
JSON
237 lines
12 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-2022-48999",
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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": "2024-08-22T01:27:53.642Z",
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"datePublished": "2024-10-21T20:06:14.118Z",
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"dateUpdated": "2026-08-05T08:53:22.725Z"
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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": "2026-08-05T08:53:22.725Z"
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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\nipv4: Handle attempt to delete multipath route when fib_info contains an nh reference\n\nGwangun Jung reported a slab-out-of-bounds access in fib_nh_match:\n fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961\n fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753\n inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874\n\nSeparate nexthop objects are mutually exclusive with the legacy\nmultipath spec. Fix fib_nh_match to return if the config for the\nto be deleted route contains a multipath spec while the fib_info\nis using a nexthop object."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - Triggered via RTM_DELROUTE over rtnetlink (inet_rtm_delroute → fib_table_delete → fib_nh_match), which requires a local process with a netlink socket, not remote packet processing.\nAC:L - An attacker can reliably create a nexthop-object route and then delete it with a legacy multipath nexthop spec; no races or attacker-uncontrollable conditions are required.\nPR:L - RTM_DELROUTE/RTM_NEWNEXTHOP require CAP_NET_ADMIN, but that capability is available to an unprivileged user inside a user+network namespace (netlink_net_capable checks the netns user_ns).\nUI:N - Exploitation needs no victim action; the attacker sets up the nexthop route and issues the delete themselves.\nS:U - Impact is confined to the local kernel networking stack authority; this is not a VM/IOMMU/sandbox boundary cross.\nC:H - The bug is a slab out-of-bounds read of struct fib_nh fields past a zero-length fib_nh[] allocation; with a multipath nexthop group, fib_info_num_path() expands the OOB window across adjacent slab memory.\nI:N - The vulnerable path only reads and compares OOB memory for route matching; there is no out-of-bounds write or memory-corruption write primitive.\nA:H - The slab OOB access can oops/panic the kernel when it hits unmapped or poisoned memory, matching the reported KASAN slab-out-of-bounds crash."
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}
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]
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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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"net/ipv4/fib_semantics.c",
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"tools/testing/selftests/net/fib_nexthops.sh"
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],
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"versions": [
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{
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"version": "493ced1ac47c48bb86d9d4e8e87df8592be85a0e",
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"lessThan": "cc3cd130ecfb8b0ae52e235e487bae3f16a24a32",
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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": "493ced1ac47c48bb86d9d4e8e87df8592be85a0e",
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"lessThan": "0b5394229ebae09afc07aabccb5ffd705ffd250e",
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"status": "affected",
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"versionType": "git"
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},
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"lessThan": "25174d91e4a32a24204060d283bd5fa6d0ddf133",
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"status": "affected",
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},
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{
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"lessThan": "61b91eb33a69c3be11b259c5ea484505cd79f883",
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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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"net/ipv4/fib_semantics.c",
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"tools/testing/selftests/net/fib_nexthops.sh"
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],
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"versions": [
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{
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"version": "5.3",
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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": "5.3",
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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": "5.4.226",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.158",
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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": "5.15.82",
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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": "6.0.12",
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"lessThanOrEqual": "6.0.*",
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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": "6.1",
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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": "5.3",
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"versionEndExcluding": "5.4.226"
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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/cc3cd130ecfb8b0ae52e235e487bae3f16a24a32"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b5394229ebae09afc07aabccb5ffd705ffd250e"
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},
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{
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"url": "https://git.kernel.org/stable/c/25174d91e4a32a24204060d283bd5fa6d0ddf133"
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},
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{
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"url": "https://git.kernel.org/stable/c/bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2"
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},
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{
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"url": "https://git.kernel.org/stable/c/61b91eb33a69c3be11b259c5ea484505cd79f883"
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}
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],
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"title": "ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2022-48999",
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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": "2024-10-22T13:15:25.948167Z"
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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": "2024-10-22T13:18:40.948Z"
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}
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}
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]
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}
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} |