CVE-2024-26851
Vulnerability from cvelistv5
Published
2024-04-17 10:17
Modified
2024-12-19 08:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: Add protection for bmp length out of range UBSAN load reports an exception of BRK#5515 SHIFT_ISSUE:Bitwise shifts that are out of bounds for their data type. vmlinux get_bitmap(b=75) + 712 <net/netfilter/nf_conntrack_h323_asn1.c:0> vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956 <net/netfilter/nf_conntrack_h323_asn1.c:592> vmlinux decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812 <net/netfilter/nf_conntrack_h323_asn1.c:576> vmlinux decode_choice(base=0xFFFFFFD008037280, level=0) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux DecodeRasMessage() + 304 <net/netfilter/nf_conntrack_h323_asn1.c:833> vmlinux ras_help() + 684 <net/netfilter/nf_conntrack_h323_main.c:1728> vmlinux nf_confirm() + 188 <net/netfilter/nf_conntrack_proto.c:137> Due to abnormal data in skb->data, the extension bitmap length exceeds 32 when decoding ras message then uses the length to make a shift operation. It will change into negative after several loop. UBSAN load could detect a negative shift as an undefined behaviour and reports exception. So we add the protection to avoid the length exceeding 32. Or else it will return out of range error and stop decoding.
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
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/014a807f1cc9c9d5173c1cd935835553b00d211c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/39001e3c42000e7c2038717af0d33c32319ad591
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4bafcc43baf7bcf93566394dbd15726b5b456b7a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/767146637efc528b5e3d31297df115e85a2fd362
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/80ee5054435a11c87c9a4f30f1ff750080c96416
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/98db42191329c679f4ca52bec0b319689e1ad8cb
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b3c0f553820516ad4b62a9390ecd28d6f73a7b13
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ccd1108b16ab572d9bf635586b0925635dbd6bbc
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Impacted products
Vendor Product Version
Linux Linux Version: 2.6.17
Show details on NVD website

To clipboard 

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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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nf_conntrack_h323: Agregar protecci\u00f3n para longitud de bmp fuera de rango La carga de UBSAN informa una excepci\u00f3n de BRK#5515 SHIFT_ISSUE: desplazamientos bit a bit que est\u00e1n fuera de los l\u00edmites para su tipo de datos. vmlinux get_bitmap(b=75) + 712  vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, nivel=134443100) + 1956  vmlinux decode_choice (base=0xFFFFFFD0080370F0, nivel=23843636) + 1216  vmlinux decode_seq(f=0xFFFFFFD0080371A8, nivel=134443500) + 812  vmlinux decode_choice(base =0xFFFFFFD008037280, nivel=0) + 1216  vmlinux DecodeRasMessage() + 304  vmlinux ras_help() + 684  vmlinux nf_confirm() + 188  Debido a datos anormales en skb-\u0026gt;data, la longitud del mapa de bits de la extensi\u00f3n excede 32 cuando se decodifica el mensaje ras y luego usa la longitud para realizar una operaci\u00f3n de cambio . Cambiar\u00e1 a negativo despu\u00e9s de varios bucles. La carga de UBSAN podr\u00eda detectar un cambio negativo como un comportamiento indefinido e informar una excepci\u00f3n. Por lo tanto, agregamos la protecci\u00f3n para evitar que la longitud exceda 32. 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}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.