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CVE-2022-2929

DHCP memory leak

MEDIUM
6.5
CVSS Score
Published: October 7, 2022 at 04:45 AM UTC
Updated: June 17, 2026 at 04:42 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraDHCP

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%

Description

In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
10.0
Fedora· Fedora Projectrpm
95%
353637
DHCP· Isc
95%
v < 4.1-ESV-R16-P2v < 4.4.31.0.0 ≤ v < 4.1-esv4.2.0 ≤ v ≤ 4.4.34.1-esv r14.1-esv r104.1-esv r10_b14.1-esv r10_rc14.1-esv r10b14.1-esv r10rc14.1-esv r114.1-esv r11_b14.1-esv r11_rc14.1-esv r11_rc24.1-esv r11b14.1-esv r11rc14.1-esv r11rc24.1-esv r124.1-esv r12-p14.1-esv r12_b14.1-esv r12_p14.1-esv r12b14.1-esv r134.1-esv r13_b14.1-esv r13b14.1-esv r144.1-esv r14_b14.1-esv r14b14.1-esv r154.1-esv r15-p14.1-esv r15_b14.1-esv r164.1-esv r16-p1
Affected range stops below 4.1-ESV-R16-P2, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1-esv, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.3, so it looks safe — our inference, not a vendor statement

References (6)

Vendor Advisory
Source: [email protected]
https://kb.isc.org/docs/cve-2022-2929
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/10/msg00015.html
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SARIK7KZ7MGQIWDRWZFAOSQSPXY4GOU/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QQXYCIWUDILRCNBAIMVFCSGXBRKEPB4K/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T6IBFH4MRRNJQVWEKILQ6I6CXWW766FX/
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202305-22

CVSS

6.5MEDIUMisc
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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