In the Linux kernel, the following vulnerability has been resolved: net: ppp: Add bound checking for skb data on pppsynctxmung Ensure we have enough data in linear buffer from skb before accessing initial bytes. This prevents potential out-of-bounds accesses when processing short packets. When pppsynctxmung receives an incoming package with an empty payload: (remote) gef➤ p *(struct pppoehdr *) (skb->head + skb->networkheader) $18 = { type = 0x1, ver = 0x1, code = 0x0, sid = 0x2, length = 0x0, tag = 0xffff8880371cdb96 } from the skb struct (trimmed) tail = 0x16, end = 0x140, head = 0xffff88803346f400 "4", data = 0xffff88803346f416 ":\377", truesize = 0x380, len = 0x0, datalen = 0x0, maclen = 0xe, hdr_len = 0x0, it is not safe to access data[2]. [pabeni@redhat.com: fixed subj typo]
{ "binaries": [ { "binary_name": "linux-image-unsigned-5.15.0-1019-azure-fde", "binary_version": "5.15.0-1019.24~20.04.1.1" }, { "binary_name": "linux-image-unsigned-5.15.0-1019-azure-fde-dbgsym", "binary_version": "5.15.0-1019.24~20.04.1.1" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-headers-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-image-unsigned-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-image-unsigned-6.14.0-1005-oem-dbgsym", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-ipu6-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-ipu7-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-usbio-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-vision-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-oem-6.14-headers-6.14.0-1005", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-oem-6.14-tools-6.14.0-1005", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-tools-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "bpftool", "binary_version": "7.6.0+6.14.0-22.22" }, { "binary_name": "linux-bpf-dev", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-buildinfo-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-buildinfo-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-common", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-doc", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-64k-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-lib-rust-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-libc-dev", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-extra-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-ipu6-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-ipu7-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-usbio-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-vision-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-perf", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-source-6.14.0", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-common", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-host", "binary_version": "6.14.0-22.22" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-azure-cloud-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-azure-headers-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-azure-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-buildinfo-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-cloud-tools-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-headers-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-unsigned-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-unsigned-6.14.0-1007-azure-dbgsym", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-extra-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-tools-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-buildinfo-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-gcp-headers-6.14.0-1008", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-gcp-tools-6.14.0-1008", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-headers-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-headers-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-64k-dbgsym", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-dbgsym", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-extra-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-extra-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-tools-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-tools-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-headers-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-6.14.0-1007-raspi-dbgsym", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-raspi-headers-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-raspi-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-tools-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-cloud-tools-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-headers-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-image-unsigned-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-image-unsigned-6.14.0-1004-realtime-dbgsym", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-extra-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-cloud-tools-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-headers-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-tools-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-tools-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-headers-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-image-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-image-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-modules-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-riscv-headers-6.14.0-22", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-riscv-tools-6.14.0-22", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }