454 lines
23 KiB
JSON
454 lines
23 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-45842",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-05-13T15:03:33.078Z",
|
|
"datePublished": "2026-05-27T09:24:42.637Z",
|
|
"dateUpdated": "2026-11-06T15:42:59.081Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-06-14T17:46:17.557Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nslip: reject VJ receive packets on instances with no rstate array\n\nslhc_init() accepts rslots == 0 as a valid configuration, with the\ndocumented meaning of 'no receive compression'. In that case the\nallocation loop in slhc_init() is skipped, so comp->rstate stays\nNULL and comp->rslot_limit stays 0 (from the kzalloc of struct\nslcompress).\n\nThe receive helpers do not defend against that configuration.\nslhc_uncompress() dereferences comp->rstate[x] when the VJ header\ncarries an explicit connection ID, and slhc_remember() later assigns\ncs = &comp->rstate[...] after only comparing the packet's slot number\nto comp->rslot_limit. Because rslot_limit is 0, slot 0 passes the\nrange check, and the code dereferences a NULL rstate.\n\nThe configuration is reachable in-tree through PPP. PPPIOCSMAXCID\nstores its argument in a signed int, and (val >> 16) uses arithmetic\nshift. Passing 0xffff0000 therefore sign-extends to -1, so val2 + 1\nis 0 and ppp_generic.c ends up calling slhc_init(0, 1). Because\n/dev/ppp open is gated by ns_capable(CAP_NET_ADMIN), the whole path\nis reachable from an unprivileged user namespace. Once the malformed\nVJ state is installed, any inbound VJ-compressed or VJ-uncompressed\nframe that selects slot 0 crashes the kernel in softirq context:\n\n Oops: general protection fault, probably for non-canonical\n address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:slhc_uncompress (drivers/net/slip/slhc.c:519)\n Call Trace:\n <TASK>\n ppp_receive_nonmp_frame (drivers/net/ppp/ppp_generic.c:2466)\n ppp_input (drivers/net/ppp/ppp_generic.c:2359)\n ppp_async_process (drivers/net/ppp/ppp_async.c:492)\n tasklet_action_common (kernel/softirq.c:926)\n handle_softirqs (kernel/softirq.c:623)\n run_ksoftirqd (kernel/softirq.c:1055)\n smpboot_thread_fn (kernel/smpboot.c:160)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:164)\n </TASK>\n\nReject the receive side on such instances instead of touching rstate.\nslhc_uncompress() falls through to its existing 'bad' label, which\nbumps sls_i_error and enters the toss state. slhc_remember() mirrors\nthat with an explicit sls_i_error increment followed by slhc_toss();\nthe sls_i_runt counter is not used here because a missing rstate is\nan internal configuration state, not a runt packet.\n\nThe transmit path is unaffected: the only in-tree caller that picks\nrslots from userspace (ppp_generic.c) still supplies tslots >= 1, and\nslip.c always calls slhc_init(16, 16), so comp->tstate remains valid\nand slhc_compress() continues to work."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/net/slip/slhc.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "3d71c961febddd855d3ae9a519eeb96c8023f430",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "72304fec672e8aac9ee7b9c475db96b37cca8d8d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "4aa9eca6fda2919027dfd7a7cc69334982d89586",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "c6980e8b1a86288167f34966fa5219031999b6f1",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "de42f86e2cf5028a97e74c25869d1a962b13c301",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "9e1ff0eead073c4f46d874ad2526b7dda5465faf",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "7b0d9e878ec2b21d99ae8051b3dda59cdb66c152",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4ab42d78e37a294ac7bc56901d563c642e03c4ae",
|
|
"lessThan": "e76607442d5b73e1ba6768f501ef815bb58c2c0e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "42fc512469e78939c1e419d3310c47de55bdcbb8",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "df085f1cb3acd3d75408ff94f366983873bce7d2",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "a1c3860d3c5fc62bd35f089bcb03f18a37242de9",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "f82699de104eaf8a7ffc2849a566a94818dd8a3c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "354b254af5c1350de9586af75fe5a821b35bfb33",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "5148857f5d4c812cc918cf4627f7880521e987eb",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "82185755d90c8047c6f4b589c39998ff3d4ca3ad",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "a50a93cc99286dc444c7e5ccc7dfb9d58c2d346d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6b4fa561e26526c62636414d267342c945084f44",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "2.6.32.70",
|
|
"lessThan": "2.6.33",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.2.75",
|
|
"lessThan": "3.3",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.4.111",
|
|
"lessThan": "3.5",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.10.96",
|
|
"lessThan": "3.11",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.12.53",
|
|
"lessThan": "3.13",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.14.60",
|
|
"lessThan": "3.15",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "3.18.27",
|
|
"lessThan": "3.19",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.1.17",
|
|
"lessThan": "4.2",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.3.5",
|
|
"lessThan": "4.4",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/net/slip/slhc.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.4",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.4",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.258",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.209",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.175",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.141",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.91",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.33",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.0.10",
|
|
"lessThanOrEqual": "7.0.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1",
|
|
"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": "4.4",
|
|
"versionEndExcluding": "5.10.258"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "5.15.209"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "6.1.175"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "6.6.141"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "6.12.91"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "6.18.33"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "7.0.10"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.4",
|
|
"versionEndExcluding": "7.1"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.32.70"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.2.75"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.4.111"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.10.96"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.12.53"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.14.60"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.18.27"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.1.17"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.3.5"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/3d71c961febddd855d3ae9a519eeb96c8023f430"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/72304fec672e8aac9ee7b9c475db96b37cca8d8d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4aa9eca6fda2919027dfd7a7cc69334982d89586"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c6980e8b1a86288167f34966fa5219031999b6f1"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/de42f86e2cf5028a97e74c25869d1a962b13c301"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/9e1ff0eead073c4f46d874ad2526b7dda5465faf"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/7b0d9e878ec2b21d99ae8051b3dda59cdb66c152"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e76607442d5b73e1ba6768f501ef815bb58c2c0e"
|
|
}
|
|
],
|
|
"title": "slip: reject VJ receive packets on instances with no rstate array",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"x_adpType": "supplier",
|
|
"providerMetadata": {
|
|
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
|
|
"shortName": "siemens-SADP",
|
|
"dateUpdated": "2026-10-15T01:19:45.645Z"
|
|
},
|
|
"affected": [
|
|
{
|
|
"vendor": "Siemens",
|
|
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"lessThan": "*",
|
|
"versionType": "custom"
|
|
}
|
|
],
|
|
"defaultStatus": "unknown"
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-45842",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-11-06T15:41:49.518944Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-11-06T15:42:59.081Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |