Bug 2516404 (CVE-2026-72402) - CVE-2026-72402 kernel: bpf: Mask pseudo pointer values in verifier logs
Summary: CVE-2026-72402 kernel: bpf: Mask pseudo pointer values in verifier logs
Keywords:
Status: NEW
Alias: CVE-2026-72402
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:10 UTC by OSIDB Bzimport
Modified: 2026-08-18 09:14 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-08-15 06:10:41 UTC
In the Linux kernel, the following vulnerability has been resolved:

bpf: Mask pseudo pointer values in verifier logs

print_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo
sources when pointer leaks are not allowed, but the mask only covers
BPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE.

BPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can
also be resolved to kernel pointer values before the verifier log prints
the instruction. Include them in the existing pointer classification so
the log prints 0x0 instead of the rewritten address.


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