CVE-2023-52462 bpf: fix check for attempt to corrupt spilled pointer

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

CVE-2023-52462

CVE-2023-52462 concerns the Linux kernel BPF spill-pointer bug. Technical details in connected docs indicate the vulnerability arises when a register is spilled onto the stack as 1/2/4-byte registers, leading to incorrect checking of spilled slots via slot_type and the need to consult slot_type[7...

CVE-2023-52462

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

CVE-2024-26591

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix re-attachment branch in bpftracingprogattach The following case can cause a crash due to missing attachbtf: 1 load rawtp program 2 load fentry program with rawtp as targetfd 3 create tracing link for fentry program with...

CVE-2024-26589

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject variable offset alu on PTRTOFLOWKEYS For PTRTOFLOWKEYS, checkflowkeysaccess only uses fixed off for validation. However, variable offset ptr alu is not prohibited for this ptr kind. So the variable offset is not...

CVE-2023-52452

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix accesses to uninit stack slots Privileged programs are supposed to be able to read uninitialized stack memory ever since 6715df8d5 but, before this patch, these accesses were permitted inconsistently. In particular,...

CVE-2023-52447

In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpfmapfdputptr decreases the...

CVE-2023-52446

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a race condition between btfput and mapfree When running ./testprogs -j in my local vm with latest kernel, I once hit a kasan error like below: 1887.184724 BUG: KASAN: slab-use-after-free in bpfrbrootfree+0x1f8/0x2b0...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux Kernel that stems from a faulty pointer in the bpf module...

CVE-2024-26589

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject variable offset alu on PTRTOFLOWKEYS For PTRTOFLOWKEYS, checkflowkeysaccess only uses fixed off for validation. However, variable offset ptr alu is not prohibited for this ptr kind. So the variable offset is not...

DEBIAN-CVE-2024-26589

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject variable offset alu on PTRTOFLOWKEYS For PTRTOFLOWKEYS, checkflowkeysaccess only uses fixed off for validation. However, variable offset ptr alu is not prohibited for this ptr kind. So the variable offset is not...

DEBIAN-CVE-2024-26591

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix re-attachment branch in bpftracingprogattach The following case can cause a crash due to missing attachbtf: 1 load rawtp program 2 load fentry program with rawtp as targetfd 3 create tracing link for fentry program with...

CVE-2023-52446

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a race condition between btfput and mapfree When running ./testprogs -j in my local vm with latest kernel, I once hit a kasan error like below: 1887.184724 BUG: KASAN: slab-use-after-free in bpfrbrootfree+0x1f8/0x2b0...

CVE-2023-52447

In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpfmapfdputptr decreases the...

CVE-2024-26588

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Prevent out-of-bounds memory access The testtag test triggers an unhandled page fault: ./testtag 130.640218 CPU 0 Unable to handle kernel paging request at virtual address ffff80001b898004, era == 9000000003137f7c...

DEBIAN-CVE-2023-52447

In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpfmapfdputptr decreases the...

DEBIAN-CVE-2024-26588

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Prevent out-of-bounds memory access The testtag test triggers an unhandled page fault: ./testtag 130.640218 CPU 0 Unable to handle kernel paging request at virtual address ffff80001b898004, era == 9000000003137f7c...

DEBIAN-CVE-2023-52446

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a race condition between btfput and mapfree When running ./testprogs -j in my local vm with latest kernel, I once hit a kasan error like below: 1887.184724 BUG: KASAN: slab-use-after-free in bpfrbrootfree+0x1f8/0x2b0...

AZL-35453 CVE-2023-52447 affecting package hyperv-daemons for versions less than 5.15.153.1-1

In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpfmapfdputptr decreases the...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: bpf: Defer the free of inner map when necessary When updating or deleting an inner map in map array or map htab, the map may still be accessed by non-sleepable program or sleepable program. However bpfmapfdputptr decreases the...