What’s Vulnerable › Vulnerabilities

CVE-2023-1078

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-27 · updated 2026-06-17
• Weakness: CWE-787

Description

A flaw was found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol. The rds_rm_zerocopy_callback() uses list_entry() on the head of a list causing a type confusion. Local user can trigger this with rds_message_put(). Type confusion leads to `struct rds_msg_zcopy_info *info` actually points to something else that is potentially controlled by local user. It is known how to trigger this, which causes an out of bounds access, and a lock corruption.

Affected products

• Linux kernel: from 4.17 before 4.19.273; from 4.20 before 5.4.232; from 5.5 before 5.10.168; from 5.11 before 5.15.94; from 5.16 before 6.1.12 — fixed in 4.19.273, 5.10.168, 5.15.94, 5.4.232, 6.1.12

How to fix

Upgrade to a fixed version: Linux kernel 4.19.273, 5.10.168, 5.15.94, 5.4.232. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2023/11/05/1
• https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f753a68980cf4b59a80fe677619da2b1804f526d
• https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://security.netapp.com/advisory/ntap-20230505-0004/
• http://www.openwall.com/lists/oss-security/2023/11/05/1
• https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f753a68980cf4b59a80fe677619da2b1804f526d
• https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
• https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
• https://security.netapp.com/advisory/ntap-20230505-0004/

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