CVE-2026-53090

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Source
https://cve.org/CVERecord?id=CVE-2026-53090
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53090.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-53090
Downstream
Related
Published
2026-06-24T16:30:29.413Z
Modified
2026-08-21T03:30:13.235852195Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
bpf: Fix ld_{abs,ind} failure path analysis in subprogs
Details

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

bpf: Fix ld_{abs,ind} failure path analysis in subprogs

Usage of ld_{abs,ind} instructions got extended into subprogs some time ago via commit 09b28d76eac4 ("bpf: Add abnormal return checks."). These are only allowed in subprograms when the latter are BTF annotated and have scalar return types.

The code generator in bpfgenldabs() has an abnormal exit path (r0=0 + exit) from legacy cBPF times. While the enforcement is on scalar return types, the verifier must also simulate the path of abnormal exit if the packet data load via ld{abs,ind} failed.

This is currently not the case. Fix it by having the verifier simulate both success and failure paths, and extend it in similar ways as we do for tail calls. The success path (r0=unknown, continue to next insn) is pushed onto stack for later validation and the r0=0 and return to the caller is done on the fall-through side.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53090.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
09b28d76eac48e922dc293da1aa2b2b85c32aeee
Fixed
928d354ae3557e8f755a227e67be88034eb3cd7f
Fixed
8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe
Fixed
de1055e7f9e67af32b1f3376066272b04e5223c0
Fixed
37ad2bb11e9de92cb7b94548705eeedd87f7d392
Fixed
8674e2db06cff6b50f2216eed9a761d15425bb34
Fixed
ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337
Fixed
d846d83bdacbd8f14fc45c63b8c1d22608452e1c
Fixed
ee861486e377edc55361c08dcbceab3f6b6577bd

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53090.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.10.0
Fixed
5.10.265
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.216
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.183
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.0.10

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53090.json"