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CVE-2023-42752

Good to know:

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Date: October 12, 2023

An integer overflow flaw was found in the Linux kernel. This issue leads to the kernel allocating `skb_shared_info` in the userspace, which is exploitable in systems without SMAP protection since `skb_shared_info` contains references to function pointers.

Language: C

Severity Score

Related Resources (7)

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c3b704d4a4a2
https://bugzilla.redhat.com/show_bug.cgi?id=2239828
https://nvd.nist.gov/vuln/detail/CVE-2023-42752
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=915d975b2ffa
https://access.redhat.com/security/cve/CVE-2023-42752
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
https://www.mend.io/vulnerability-database/CVE-2023-42752

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Top Fix

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Upgrade Version

Upgrade to version linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-yocto - 4.8.24+gitAUTOINC+c84532b647_f6329fd287;linux-libc-headers - 5.14

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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