CVE-2023-52566

2024-03-0222:15:49

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

cve

2023

52566

linux kernel

nilfs2

vulnerability

use after free

nilfs_gccache_submit_read_data

exploit

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.1%

JSON

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

nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()

In nilfs_gccache_submit_read_data(), brelse(bh) is called to drop the
reference count of bh when the call to nilfs_dat_translate() fails. If
the reference count hits 0 and its owner page gets unlocked, bh may be
freed. However, bh->b_page is dereferenced to put the page after that,
which may result in a use-after-free bug. This patch moves the release
operation after unlocking and putting the page.

NOTE: The function in question is only called in GC, and in combination
with current userland tools, address translation using DAT does not occur
in that function, so the code path that causes this issue will not be
executed. However, it is possible to run that code path by intentionally
modifying the userland GC library or by calling the GC ioctl directly.

[[email protected]: NOTE added to the commit log]

Affected configurations

Vulners

Node

linuxlinux_kernelRange2.6.30–4.14.327

linuxlinux_kernelRange4.15.0–4.19.296

linuxlinux_kernelRange4.20.0–5.4.258

linuxlinux_kernelRange5.5.0–5.10.198

linuxlinux_kernelRange5.11.0–5.15.134

linuxlinux_kernelRange5.16.0–6.1.56

linuxlinux_kernelRange6.2.0–6.5.6

linuxlinux_kernelRange6.6.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_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": [
      "fs/nilfs2/gcinode.c"
    ],
    "versions": [
      {
        "version": "a3d93f709e89",
        "lessThan": "fb1084e63ee5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "bb61224f6abc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "193b5a1c6c67",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "7130a87ca323",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "3936e8714907",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "980663f1d189",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "28df4646ad8b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a3d93f709e89",
        "lessThan": "7ee29facd8a9",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nilfs2/gcinode.c"
    ],
    "versions": [
      {
        "version": "2.6.30",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.30",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.327",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.296",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.258",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.198",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.134",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.56",
        "lessThanOrEqual": "6.1.*",
        "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"
      }
    ]
  }
]