SecuriTricks - CVE-2024-46684

Description

In the Linux kernel, the following vulnerability has been resolved: binfmt_elf_fdpic: fix AUXV size calculation when ELF_HWCAP2 is defined create_elf_fdpic_tables() does not correctly account the space for the AUX vector when an architecture has ELF_HWCAP2 defined. Prior to the commit 10e29251be0e ("binfmt_elf_fdpic: fix /proc/<pid>/auxv") it resulted in the last entry of the AUX vector being set to zero, but with that change it results in a kernel BUG. Fix that by adding one to the number of AUXV entries (nitems) when ELF_HWCAP2 is defined.

Product(s) Impacted

Vendor	Product	Versions
Linux	Linux Kernel	*, 6.11

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-131

Incorrect Calculation of Buffer Size

The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
o	linux	linux_kernel	/	/	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc1	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc2	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc3	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc4	/	/	/	/	/	/
o	linux	linux_kernel	6.11	rc5	/	/	/	/	/	/

References

https://git.kernel.org/stable/c/c507da85e4f80c630deb9e98222ccf4118cbe6f8

https://git.kernel.org/stable/c/c6a09e342f8e6d3cac7f7c5c14085236aca284b9

CVSS Score

5.5 / 10

CVSS Data - 3.1

Attack Vector: LOCAL
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH

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

View Vector String

Timeline

Published: Sept. 13, 2024, 6:15 a.m.
Last Modified: Sept. 19, 2024, 6:04 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

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

CVE-2024-46684