cbcvebase.
CVE-2024-26851
published 2024-04-17

CVE-2024-26851: 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…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.2th percentile
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 vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956 vmlinux decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216 vmlinux decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812 vmlinux decode_choice(base=0xFFFFFFD008037280, level=0) + 1216 vmlinux DecodeRasMessage() + 304 vmlinux ras_help() + 684 vmlinux nf_confirm() + 188 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.

Affected

32 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 98db42191329c679f4ca52bec0b319689e1ad8cb98db42191329c679f4ca52bec0b319689e1ad8cb
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 4bafcc43baf7bcf93566394dbd15726b5b456b7a4bafcc43baf7bcf93566394dbd15726b5b456b7a
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < ccd1108b16ab572d9bf635586b0925635dbd6bbcccd1108b16ab572d9bf635586b0925635dbd6bbc
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < b3c0f553820516ad4b62a9390ecd28d6f73a7b13b3c0f553820516ad4b62a9390ecd28d6f73a7b13
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 39001e3c42000e7c2038717af0d33c32319ad59139001e3c42000e7c2038717af0d33c32319ad591
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 014a807f1cc9c9d5173c1cd935835553b00d211c014a807f1cc9c9d5173c1cd935835553b00d211c
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 80ee5054435a11c87c9a4f30f1ff750080c9641680ee5054435a11c87c9a4f30f1ff750080c96416
linuxlinux>= 5e35941d990123f155b02d5663e51a24f816b6f3 < 767146637efc528b5e3d31297df115e85a2fd362767146637efc528b5e3d31297df115e85a2fd362
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 5.4.0-189.2095.4.0-189.209
linuxlinux_kernel>= 0 < 5.15.0-112.1225.15.0-112.122
linuxlinux_kernel>= 0 < 4.4.0-259.2934.4.0-259.293
linuxlinux_kernel>= 0 < 4.15.0-229.2414.15.0-229.241

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.0HIGH
vendor_ubuntu7.0HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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