CVE-2026-52932Network attack vector

Remote service interruption via IPComp page leak

Published Jun 24, 2026 · Updated Jun 24, 2026

Memory leak in Linux Kernel allows remote attackers to exhaust kernel memory through malformed IPComp packets sent to a configured IPsec endpoint. The xfrm_ipcomp.c receive path allocates destination scatter-gather pages before crypto_acomp_decompress(), but its error branch skips freeing them. An installed inbound IPComp security association is required; repeated decompression errors consume memory until the host interrupts service.

CVSS severity7.5
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Linux Kernel allows remote attackers to exhaust kernel memory through malformed IPComp packets sent to a configured IPsec endpoint. The xfrm_ipcomp.c receive path allocates destination scatter-gather pages before crypto_acomp_decompress(), but its error branch skips freeing them. An installed inbound IPComp security association is required; repeated decompression errors consume memory until the host interrupts service.

The record

CVE
CVE-2026-52932
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.15
  2. Affected versionversion=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <7dbac7680eb629b3b4dc7e98c34f943b8814c0c8
  3. Affected versionversion=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <b30aa173c3809f6af4c83a86099be1be19aa48eb
  4. Affected versionversion=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <dc6dcba80d72a27ab61831ad3d253316e0c9b9d5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.15; version=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <7dbac7680eb629b3b4dc7e98c34f943b8814c0c8; version=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <b30aa173c3809f6af4c83a86099be1be19aa48eb; version=eb2953d26971f3083bbf95de4bc997b5bedf0b6e <dc6dcba80d72a27ab61831ad3d253316e0c9b9d5

Published CVSS scores

7.5kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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