CVE-2023-53357: linux kernel Out-of-bounds Read — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: check slab-out-of-bounds in md_bitmap_get_counter If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage() will return -EINVAL because 'page >= bitmap->pages', but the return value was not checked immediately in md_bitmap_get_counter() in order to set *blocks value and slab-out-of-bounds occurs. Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and return directly if true.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.36 — 4.19.291
linux	linux_kernel	4.20 — 5.4.251
linux	linux_kernel	5.5 — 5.10.188
linux	linux_kernel	5.11 — 5.15.121
linux	linux_kernel	5.16 — 6.1.39
linux	linux_kernel	6.2 — 6.3.13
linux	linux_kernel	6.4 — 6.4.4

References

Advisories & Patches

https://git.kernel.org/stable/c/152bb26796ff054af50b2ee1b3ca56e364e4f61b https://git.kernel.org/stable/c/301867b1c16805aebbc306aafa6ecdc68b73c7e5 https://git.kernel.org/stable/c/374fb914304d9b500721007f3837ea8f1f9a2418 https://git.kernel.org/stable/c/39fa14e824acfd470db4f42c354297456bd82b53 https://git.kernel.org/stable/c/a134dd582c0d5b6068efa308bd485cf1d00b3f65 https://git.kernel.org/stable/c/b0b971fe7d61411ede63c3291764dbde1577ef2c https://git.kernel.org/stable/c/be1a3ec63a840cc9e59a033acf154f56255699a1 https://git.kernel.org/stable/c/bea301c046110bf421a3ce153fb868cb8d618e90

Frequently Asked Questions

What is CVE-2023-53357? +

In the Linux kernel, the following vulnerability has been resolved: md/raid10: check slab-out-of-bounds in md_bitmap_get_counter If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage() will return -EINVAL because 'page >= bitmap->pages', but the return value was not checked immediately in md_bitmap_get_counter() in order to set *blocks value and slab-out-of-bounds occurs. Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and return directly if true. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-53357? +

CVE-2023-53357 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53357? +

CVE-2023-53357 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53357? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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