CVE-2026-72374

afs: Fix callback service message parsers to pass through -EAGAIN

HIGH
7.5
CVSS Score
Published: August 15, 2026 at 05:56 AM UTC
Updated: October 16, 2026 at 07:17 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: afs: Fix callback service message parsers to pass through -EAGAIN The AFS filesystem client uses an rxrpc server to listen for callback notifications. Each callback call type handler has a delivery function that parses the incoming request stream, and this should return -EAGAIN the last packet hasn't yet been seen, but all currently queued received data is consumed. afs_extract_data() does this, but the -EAGAIN return is switched to 0 inadvertantly Fix callback service message parsers to pass through -EAGAIN

Affected

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

4.9d001648ec7cf8b21ae9eec8b9ba4a18295adfb14
Vendor states this is fixed in 09c67a7ded481482155b836c8c7f078a3075f8de (fixed)
Vendor states this is fixed in 0acbc09d2aca0432af45cec114f20d55ceafaec4 (fixed)
Vendor states this is fixed in 0f36469d7ce98b362934113c550d08bb0c784231 (fixed)
Vendor states this is fixed in 239cd337c9d047e7097f5b2ebbb41ddfb8180bc6 (fixed)
Vendor states this is fixed in 26b737b3769e92493fe94c34620399d93ca231ae (fixed)
Vendor states this is fixed in 5a39b145a8fb49f316e7ec1f29ba51d68095c7e4 (fixed)
Vendor states this is fixed in 772850871a2e772e26f9d93f1e9ddd413b3eeaa4 (fixed)
Vendor states this is fixed in f14dd036fad3d359f26f1282199cec06b3a9362b (fixed)
Vendor states this is fixed in 4.9 (unaffected)
Vendor states this is fixed in 5.10.261 (unaffected)
Vendor states this is fixed in 5.15.212 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card