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CVE-2022-48929— bpf: Fix crash due to out of bounds access into reg2btf_ids.

EPSS 0.03% · P8
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I. Basic Information for CVE-2022-48929

Vulnerability Information
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Vulnerability Title
bpf: Fix crash due to out of bounds access into reg2btf_ids.
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix crash due to out of bounds access into reg2btf_ids. When commit e6ac2450d6de ("bpf: Support bpf program calling kernel function") added kfunc support, it defined reg2btf_ids as a cheap way to translate the verifier reg type to the appropriate btf_vmlinux BTF ID, however commit c25b2ae13603 ("bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL") moved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after the base register types, and defined other variants using type flag composition. However, now, the direct usage of reg->type to index into reg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to out of bounds access and kernel crash on dereference of bad pointer.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于不正确地使用bpf_reg_type枚举成员作为索引，导致越界访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 8d38cde47a7e17b646401fa92d916503caa5375e ~ 8c39925e98d498b9531343066ef82ae39e41adae -
LinuxLinux 5.16.11 ~ 5.16.12 -

II. Public POCs for CVE-2022-48929

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III. Intelligence Information for CVE-2022-48929

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Same Patch Batch · Linux · 2024-08-22 · 42 CVEs total

CVE-2022-48931configfs: fix a race in configfs_{,un}register_subsystem()
CVE-2022-48922riscv: fix oops caused by irqsoff latency tracer
CVE-2022-48923btrfs: prevent copying too big compressed lzo segment
CVE-2022-48924thermal: int340x: fix memory leak in int3400_notify()
CVE-2022-48925RDMA/cma: Do not change route.addr.src_addr outside state checks
CVE-2022-48942hwmon: Handle failure to register sensor with thermal zone correctly
CVE-2022-48943KVM: x86/mmu: make apf token non-zero to fix bug
CVE-2022-48926usb: gadget: rndis: add spinlock for rndis response list
CVE-2022-48927iio: adc: tsc2046: fix memory corruption by preventing array overflow
CVE-2022-48928iio: adc: men_z188_adc: Fix a resource leak in an error handling path
CVE-2022-48930RDMA/ib_srp: Fix a deadlock
CVE-2022-48921sched/fair: Fix fault in reweight_entity
CVE-2022-48932net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
CVE-2022-48933netfilter: nf_tables: fix memory leak during stateful obj update
CVE-2022-48934nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac()
CVE-2022-48935netfilter: nf_tables: unregister flowtable hooks on netns exit
CVE-2022-48937io_uring: add a schedule point in io_add_buffers()
CVE-2022-48938CDC-NCM: avoid overflow in sanity checking
CVE-2022-48939bpf: Add schedule points in batch ops
CVE-2022-48940bpf: Fix crash due to incorrect copy_map_value

Showing top 20 of 42 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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