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vuln-cve/data/2025/21xxx/CVE-2025-21653.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-21653",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-12-29T08:45:45.729Z",
"datePublished": "2025-01-19T10:18:10.354Z",
"dateUpdated": "2026-10-15T01:02:49.719Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:03:50.397Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: cls_flow: validate TCA_FLOW_RSHIFT attribute\n\nsyzbot found that TCA_FLOW_RSHIFT attribute was not validated.\nRight shitfing a 32bit integer is undefined for large shift values.\n\nUBSAN: shift-out-of-bounds in net/sched/cls_flow.c:329:23\nshift exponent 9445 is too large for 32-bit type 'u32' (aka 'unsigned int')\nCPU: 1 UID: 0 PID: 54 Comm: kworker/u8:3 Not tainted 6.13.0-rc3-syzkaller-00180-g4f619d518db9 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nWorkqueue: ipv6_addrconf addrconf_dad_work\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n ubsan_epilogue lib/ubsan.c:231 [inline]\n __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468\n flow_classify+0x24d5/0x25b0 net/sched/cls_flow.c:329\n tc_classify include/net/tc_wrapper.h:197 [inline]\n __tcf_classify net/sched/cls_api.c:1771 [inline]\n tcf_classify+0x420/0x1160 net/sched/cls_api.c:1867\n sfb_classify net/sched/sch_sfb.c:260 [inline]\n sfb_enqueue+0x3ad/0x18b0 net/sched/sch_sfb.c:318\n dev_qdisc_enqueue+0x4b/0x290 net/core/dev.c:3793\n __dev_xmit_skb net/core/dev.c:3889 [inline]\n __dev_queue_xmit+0xf0e/0x3f50 net/core/dev.c:4400\n dev_queue_xmit include/linux/netdevice.h:3168 [inline]\n neigh_hh_output include/net/neighbour.h:523 [inline]\n neigh_output include/net/neighbour.h:537 [inline]\n ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236\n iptunnel_xmit+0x55d/0x9b0 net/ipv4/ip_tunnel_core.c:82\n udp_tunnel_xmit_skb+0x262/0x3b0 net/ipv4/udp_tunnel_core.c:173\n geneve_xmit_skb drivers/net/geneve.c:916 [inline]\n geneve_xmit+0x21dc/0x2d00 drivers/net/geneve.c:1039\n __netdev_start_xmit include/linux/netdevice.h:5002 [inline]\n netdev_start_xmit include/linux/netdevice.h:5011 [inline]\n xmit_one net/core/dev.c:3590 [inline]\n dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3606\n __dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434"
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/sched/cls_flow.c"
],
"versions": [
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "9858f4afeb2e59506e714176bd3e135539a3eeec",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "43658e4a5f2770ad94e93362885ff51c10cf3179",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "a313d6e6d5f3a631cae5a241c392c28868aa5c5e",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "2011749ca96460386844dfc7e0fde53ebee96f3c",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "e54beb9aed2a90dddf4c5d68fcfc9a01f3e40a61",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "6fde663f7321418996645ee602a473457640542f",
"status": "affected",
"versionType": "git"
},
{
"version": "e5dfb815181fcb186d6080ac3a091eadff2d98fe",
"lessThan": "a039e54397c6a75b713b9ce7894a62e06956aa92",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/sched/cls_flow.c"
],
"versions": [
{
"version": "2.6.25",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.25",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.290",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.234",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.177",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.125",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.72",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.10",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.13",
"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": "2.6.25",
"versionEndExcluding": "5.4.290"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "5.10.234"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "5.15.177"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "6.1.125"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "6.6.72"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "6.12.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.25",
"versionEndExcluding": "6.13"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/9858f4afeb2e59506e714176bd3e135539a3eeec"
},
{
"url": "https://git.kernel.org/stable/c/43658e4a5f2770ad94e93362885ff51c10cf3179"
},
{
"url": "https://git.kernel.org/stable/c/a313d6e6d5f3a631cae5a241c392c28868aa5c5e"
},
{
"url": "https://git.kernel.org/stable/c/2011749ca96460386844dfc7e0fde53ebee96f3c"
},
{
"url": "https://git.kernel.org/stable/c/e54beb9aed2a90dddf4c5d68fcfc9a01f3e40a61"
},
{
"url": "https://git.kernel.org/stable/c/6fde663f7321418996645ee602a473457640542f"
},
{
"url": "https://git.kernel.org/stable/c/a039e54397c6a75b713b9ce7894a62e06956aa92"
}
],
"title": "net_sched: cls_flow: validate TCA_FLOW_RSHIFT attribute",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T20:58:33.343Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-15T01:02:49.719Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - BIOS",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"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-265688.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-503939.html"
}
]
}
]
}
}
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