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cve416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2023-52581
HistoryMar 02, 2024 - 10:15 p.m.

CVE-2023-52581

2024-03-0222:15:49
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
64
cve
2023
52581
linux kernel
netfilter
vulnerability fix
memleak
nf_tables

AI Score

6.2

Confidence

Low

EPSS

0

Percentile

10.3%

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix memleak when more than 255 elements expired

When more than 255 elements expired we’re supposed to switch to a new gc
container structure.

This never happens: u8 type will wrap before reaching the boundary
and nft_trans_gc_space() always returns true.

This means we recycle the initial gc container structure and
lose track of the elements that came before.

While at it, don’t deref ‘gc’ after we’ve passed it to call_rcu.

Affected configurations

Vulners
Node
linuxlinux_kernelRange6.56.5.6
OR
linuxlinux_kernelRange6.6.0
VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "net/netfilter/nf_tables_api.c"
    ],
    "versions": [
      {
        "version": "8da1b048f9a5",
        "lessThan": "7cf055b43756",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bbdb3b65aa91",
        "lessThan": "a995a68e8a3b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "448be0774882",
        "lessThan": "09c85f2d21ab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d19e8bf3ea41",
        "lessThan": "ef99506eaf1d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ea3eb9f2192e",
        "lessThan": "7e5d732e6902",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5f68718b34a5",
        "lessThan": "4aea243b6853",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5f68718b34a5",
        "lessThan": "cf5000a7787c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "net/netfilter/nf_tables_api.c"
    ],
    "versions": [
      {
        "version": "6.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.5",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.5.6",
        "lessThanOrEqual": "6.5.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]