CVE-2022-49030
Linux kernel libbpf Ringbuf Mmap Size Overflow Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.
INFO
Published Date :
Oct. 21, 2024, 8:15 p.m.
Last Modified :
Oct. 24, 2024, 6:42 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49030.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49030 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49030 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 24, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec No Types Assigned https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec Patch Changed Reference Type https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed No Types Assigned https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed Patch Changed Reference Type https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490 No Types Assigned https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490 Patch Changed Reference Type https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466 No Types Assigned https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466 Patch Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8 up to (excluding) 5.10.158 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.0.12 *cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap. Added Reference kernel.org https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49030 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49030
weaknesses.