CVE-2024-50164 bpf: Fix overloading of MEM_UNINIT's meaning

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix overloading of MEMUNINIT's meaning Lonial reported an issue in the BPF verifier where checkmemsizereg has the following code: if !tnumisconstreg-varoff / For unprivileged variable accesses, disable raw mode so that the...

CVE-2024-50165

CVE-2024-50165 is a Linux kernel vulnerability in the bpf_parse_param path (kernel/bpf/inode.c) where param->string was not preserved after parsing mount options, leading to a memory leak in kmem. The 8-byte leak and related stack traces were observed in kmemleak/memdup_user usage. The issue h...

CVE-2024-50165 bpf: Preserve param->string when parsing mount options

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve param-string when parsing mount options In bpfparseparam, keep the value of param-string intact so it can be freed later. Otherwise, the kmalloc area pointed to by param-string will be leaked as shown below:...

CVE-2024-50164

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix overloading of MEMUNINIT's meaning Lonial reported an issue in the BPF verifier where checkmemsizereg has the following code: if !tnumisconstreg-varoff / For unprivileged variable accesses, disable raw mode so that the...

CVE-2024-50165 bpf: Preserve param->string when parsing mount options

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve param-string when parsing mount options In bpfparseparam, keep the value of param-string intact so it can be freed later. Otherwise, the kmalloc area pointed to by param-string will be leaked as shown below:...

CVE-2024-50165

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve param-string when parsing mount options In bpfparseparam, keep the value of param-string intact so it can be freed later. Otherwise, the kmalloc area pointed to by param-string will be leaked as shown below:...

CVE-2024-50163 bpf: Make sure internal and UAPI bpf_redirect flags don't overlap

In the Linux kernel, the following vulnerability has been resolved: bpf: Make sure internal and UAPI bpfredirect flags don't overlap The bpfredirectinfo is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri-flags field specifically,...

CVE-2024-50163 bpf: Make sure internal and UAPI bpf_redirect flags don't overlap

In the Linux kernel, the following vulnerability has been resolved: bpf: Make sure internal and UAPI bpfredirect flags don't overlap The bpfredirectinfo is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri-flags field specifically,...

CVE-2024-50163

In the Linux kernel, the following vulnerability has been resolved: bpf: Make sure internal and UAPI bpfredirect flags don't overlap The bpfredirectinfo is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri-flags field specifically,...

CVE-2024-50162 bpf: devmap: provide rxq after redirect

In the Linux kernel, the following vulnerability has been resolved: bpf: devmap: provide rxq after redirect rxq contains a pointer to the device from where the redirect happened. Currently, the BPF program that was executed after a redirect via BPFMAPTYPEDEVMAP does not have it set. This is...

CVE-2024-50162 bpf: devmap: provide rxq after redirect

In the Linux kernel, the following vulnerability has been resolved: bpf: devmap: provide rxq after redirect rxq contains a pointer to the device from where the redirect happened. Currently, the BPF program that was executed after a redirect via BPFMAPTYPEDEVMAP does not have it set. This is...

CVE-2024-50162

In the Linux kernel, the following vulnerability has been resolved: bpf: devmap: provide rxq after redirect rxq contains a pointer to the device from where the redirect happened. Currently, the BPF program that was executed after a redirect via BPFMAPTYPEDEVMAP does not have it set. This is...

CVE-2024-50162 bpf: devmap: provide rxq after redirect

In the Linux kernel, the following vulnerability has been resolved: bpf: devmap: provide rxq after redirect rxq contains a pointer to the device from where the redirect happened. Currently, the BPF program that was executed after a redirect via BPFMAPTYPEDEVMAP does not have it set. This is...

CVE-2024-50161 bpf: Check the remaining info_cnt before repeating btf fields

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the remaining infocnt before repeating btf fields When trying to repeat the btf fields for array of nested struct, it doesn't check the remaining infocnt. The following splat will be reported when the value of ret nele...

CVE-2024-50161 bpf: Check the remaining info_cnt before repeating btf fields

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the remaining infocnt before repeating btf fields When trying to repeat the btf fields for array of nested struct, it doesn't check the remaining infocnt. The following splat will be reported when the value of ret nele...

CVE-2024-50161

The CVE-2024-50161 issue affects the Linux kernel BPF interpreter (btf.c). It arises from unvalidated array indexing in btf_repeat_fields() when repeating nested struct BTF fields, potentially causing UBSAN out-of-bounds, and was reported to trigger a service denial. The connected BDU note states...

CVE-2024-50161 bpf: Check the remaining info_cnt before repeating btf fields

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the remaining infocnt before repeating btf fields When trying to repeat the btf fields for array of nested struct, it doesn't check the remaining infocnt. The following splat will be reported when the value of ret nele...

CVE-2024-50154 tcp/dccp: Don't use timer_pending() in reqsk_queue_unlink().

In the Linux kernel, the following vulnerability has been resolved: tcp/dccp: Don't use timerpending in reqskqueueunlink. Martin KaFai Lau reported use-after-free 0 in reqsktimerhandler. """ We are seeing a use-after-free from a bpf prog attached to tracetcpretransmitsynack. The program passes th...

CVE-2024-50154 tcp/dccp: Don't use timer_pending() in reqsk_queue_unlink().

In the Linux kernel, the following vulnerability has been resolved: tcp/dccp: Don't use timerpending in reqskqueueunlink. Martin KaFai Lau reported use-after-free 0 in reqsktimerhandler. """ We are seeing a use-after-free from a bpf prog attached to tracetcpretransmitsynack. The program passes th...

CVE-2024-50154

The CVE-2024-50154 vulnerability is in the Linux kernel. Root cause: a use-after-free can occur in reqsk_timer_handler() when a race around timer_pending() in reqsk_queue_unlink() allows a timer to fire after the socket is closed. The fix prevents del_timer_sync() from being missed by removing ti...