CVE-2023-54269

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Source
https://cve.org/CVERecord?id=CVE-2023-54269
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54269.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-54269
Downstream
BELL (1)
DEBIAN (1)
RHSA (2)
SUSE (4)
UBUNTU (1)
Related
SUSE (4)
Published
2025-12-30T12:16:00Z
Modified
2026-10-17T02:31:03Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
SUNRPC: double free xprt_ctxt while still in use
Details

In the Linux kernel, the following vulnerability has been resolved:

SUNRPC: double free xprt_ctxt while still in use

When an RPC request is deferred, the rq_xprt_ctxt pointer is moved out of the svc_rqst into the svc_deferred_req. When the deferred request is revisited, the pointer is copied into the new svc_rqst - and also remains in the svc_deferred_req.

In the (rare?) case that the request is deferred a second time, the old svc_deferred_req is reused - it still has all the correct content. However in that case the rq_xprt_ctxt pointer is NOT cleared so that when xpo_release_xprt is called, the ctxt is freed (UDP) or possible added to a free list (RDMA). When the deferred request is revisited for a second time, it will reference this ctxt which may be invalid, and the free the object a second time which is likely to oops.

So change svc_defer() to always clear rq_xprt_ctxt, and assert that the value is now stored in the svc_deferred_req.

Database specific 
{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54269.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f5e13d700a4d40ccde3d36e383f9247dcb3c1d2d
Fixed
7851771789e87108a92697194105ef0c9307dc5e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
773f91b2cf3f52df0d7508fdbf60f37567cdaee4
Fixed
fd86534872f445f54dc01e7db001e25eadf063a8
Fixed
e0c648627322a4c7e018e5c7f837c3c03e297dbb
Fixed
eb8d3a2c809abd73ab0a060fe971d6b9019aa3c1
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5.15.35
Fixed
5.15.113
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5.17.4
Fixed
5.18
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
11fab500f86403b2ebf6795feeade6e10302e448

Affected versions

v5.*
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.110
v5.15.111
v5.15.112
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.50
v5.15.51
v5.15.52
v5.15.53
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.60
v5.15.61
v5.15.62
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
v5.17.10
v5.17.11
v5.17.12
v5.17.13
v5.17.14
v5.17.15
v5.17.4
v5.17.5
v5.17.6
v5.17.7
v5.17.8
v5.17.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54269.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.15.113
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.30
Type
ECOSYSTEM
Events
Introduced
5.18.0
Fixed
6.3.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54269.json"