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CVE-2022-48933— netfilter: nf_tables: fix memory leak during stateful obj update

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。攻击者利用该漏洞导致内存泄漏。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux d62d0ba97b5803183e70cfded7f7b9da76893bf5< 53026346a94c43f35c32b18804041bc483271d87 affected
d62d0ba97b5803183e70cfded7f7b9da76893bf5< 7e9880e81d3fd6a43c202f205717485290432826 affected
d62d0ba97b5803183e70cfded7f7b9da76893bf5< e96e204ee6fa46702f6c94c3c69a09e69e0eac52 affected
d62d0ba97b5803183e70cfded7f7b9da76893bf5< 34bb90e407e3288f610558beaae54ecaa32b11c4 affected
d62d0ba97b5803183e70cfded7f7b9da76893bf5< dad3bdeef45f81a6e90204bcc85360bb76eccec7 affected
5.4 affected
< 5.4 unaffected
5.4.182≤ 5.4.* unaffected
… +4 more rows
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I. Basic Information for CVE-2022-48933

Vulnerability Information
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Vulnerability Title
netfilter: nf_tables: fix memory leak during stateful obj update
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memory leak during stateful obj update stateful objects can be updated from the control plane. The transaction logic allocates a temporary object for this purpose. The ->init function was called for this object, so plain kfree() leaks resources. We must call ->destroy function of the object. nft_obj_destroy does this, but it also decrements the module refcount, but the update path doesn't increment it. To avoid special-casing the update object release, do module_get for the update case too and release it via nft_obj_destroy().
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。攻击者利用该漏洞导致内存泄漏。
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 d62d0ba97b5803183e70cfded7f7b9da76893bf5 ~ 53026346a94c43f35c32b18804041bc483271d87 -
Linux Linux 5.4 -

II. Public POCs for CVE-2022-48933

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III. Intelligence Information for CVE-2022-48933

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Other References for CVE-2022-48933 (5)

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-2022-48923 7.8 HIGH btrfs: prevent copying too big compressed lzo segment
CVE-2022-48925 7.8 HIGH RDMA/cma: Do not change route.addr.src_addr outside state checks
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-2022-48931 configfs: fix a race in configfs_{,un}register_subsystem()
CVE-2022-48930 RDMA/ib_srp: Fix a deadlock
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-2022-48929 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
CVE-2022-48926 usb: gadget: rndis: add spinlock for rndis response list

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-2022-48933

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