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CVE-2022-48908— net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于在com20020pci_probe函数中存在空指针取消引用问题。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< b838add93e1dd98210482dc433768daaf752bdef affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< e50c589678e50f8d574612e473ca60ef45190896 affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< 5f394102ee27dbf051a4e283390cd8d1759dacea affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< ea372aab54903310756217d81610901a8e66cb7d affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 affected
8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f< bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d affected
… +10 more rows
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I. Basic Information for CVE-2022-48908

Vulnerability Information
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Vulnerability Title
net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices. The following log reveals it: [ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [ 3.975181] Call Trace: [ 3.976208] local_pci_probe+0x13f/0x210 [ 3.977248] pci_device_probe+0x34c/0x6d0 [ 3.977255] ? pci_uevent+0x470/0x470 [ 3.978265] really_probe+0x24c/0x8d0 [ 3.978273] __driver_probe_device+0x1b3/0x280 [ 3.979288] driver_probe_device+0x50/0x370 Fix this by checking whether the 'ci' is a null pointer first.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于在com20020pci_probe函数中存在空指针取消引用问题。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f ~ 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 -
Linux Linux 3.18 -

II. Public POCs for CVE-2022-48908

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III. Intelligence Information for CVE-2022-48908

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Other References for CVE-2022-48908 (8)

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

CVE-2022-48941 8.8 HIGH ice: fix concurrent reset and removal of VFs
CVE-2022-48919 8.8 HIGH cifs: fix double free race when mount fails in cifs_get_root()
CVE-2022-48925 7.8 HIGH RDMA/cma: Do not change route.addr.src_addr outside state checks
CVE-2022-48923 7.8 HIGH btrfs: prevent copying too big compressed lzo segment
CVE-2022-48927 7.8 HIGH iio: adc: tsc2046: fix memory corruption by preventing array overflow
CVE-2022-48913 7.8 HIGH blktrace: fix use after free for struct blk_trace
CVE-2022-48912 7.8 HIGH netfilter: fix use-after-free in __nf_register_net_hook()
CVE-2022-48911 7.8 HIGH netfilter: nf_queue: fix possible use-after-free
CVE-2022-48932 7.8 HIGH net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
CVE-2022-48935 7.8 HIGH netfilter: nf_tables: unregister flowtable hooks on netns exit
CVE-2022-48940 7.8 HIGH bpf: Fix crash due to incorrect copy_map_value
CVE-2022-48943 7.1 HIGH KVM: x86/mmu: make apf token non-zero to fix bug
CVE-2022-48933 netfilter: nf_tables: fix memory leak during stateful obj update
CVE-2022-48934 nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac()
CVE-2022-48937 io_uring: add a schedule point in io_add_buffers()
CVE-2022-48931 configfs: fix a race in configfs_{,un}register_subsystem()
CVE-2022-48930 RDMA/ib_srp: Fix a deadlock
CVE-2022-48929 bpf: Fix crash due to out of bounds access into reg2btf_ids.
CVE-2022-48928 iio: adc: men_z188_adc: Fix a resource leak in an error handling path
CVE-2022-48938 CDC-NCM: avoid overflow in sanity checking

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-48908

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