CVE-2024-26851
Vulnerability from cvelistv5
Published
2024-04-17 10:17
Modified
2024-11-05 09:16
Severity ?
Summary
netfilter: nf_conntrack_h323: Add protection for bmp length out of range
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/014a807f1cc9c9d5173c1cd935835553b00d211c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39001e3c42000e7c2038717af0d33c32319ad591
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bafcc43baf7bcf93566394dbd15726b5b456b7a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/767146637efc528b5e3d31297df115e85a2fd362
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/80ee5054435a11c87c9a4f30f1ff750080c96416
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98db42191329c679f4ca52bec0b319689e1ad8cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3c0f553820516ad4b62a9390ecd28d6f73a7b13
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ccd1108b16ab572d9bf635586b0925635dbd6bbc
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_h323: Add protection for bmp length out of range\n\nUBSAN load reports an exception of BRK#5515 SHIFT_ISSUE:Bitwise shifts\nthat are out of bounds for their data type.\n\nvmlinux   get_bitmap(b=75) + 712\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:0\u003e\nvmlinux   decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:592\u003e\nvmlinux   decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:814\u003e\nvmlinux   decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:576\u003e\nvmlinux   decode_choice(base=0xFFFFFFD008037280, level=0) + 1216\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:814\u003e\nvmlinux   DecodeRasMessage() + 304\n\u003cnet/netfilter/nf_conntrack_h323_asn1.c:833\u003e\nvmlinux   ras_help() + 684\n\u003cnet/netfilter/nf_conntrack_h323_main.c:1728\u003e\nvmlinux   nf_confirm() + 188\n\u003cnet/netfilter/nf_conntrack_proto.c:137\u003e\n\nDue to abnormal data in skb-\u003edata, the extension bitmap length\nexceeds 32 when decoding ras message then uses the length to make\na shift operation. It will change into negative after several loop.\nUBSAN load could detect a negative shift as an undefined behaviour\nand reports exception.\nSo we add the protection to avoid the length exceeding 32. Or else\nit will return out of range error and stop decoding."
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    "dateUpdated": "2024-11-05T09:16:57.568Z",
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  }
}


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