CVE-2026-98041

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Source

https://cve.org/CVERecord?id=CVE-2026-98041

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98041.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-98041

Downstream

Published

2026-09-25T10:23:53Z

Modified

2026-09-26T03:48:37Z

Severity

7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

bpf: Don't predict JMP32 pointer vs zero comparisons

Details

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

bpf: Don't predict JMP32 pointer vs zero comparisons

Consider the following program:

    r1 = map_value;      /* low 32 bits are zero at runtime */
    r6 = 0xdead000000000000;
    if w1 != 0 goto l1;
l0: r1 += r6;
    r2 = *(u64 *)(r1 + 0);
    exit;
l1: r6 = 0;
    goto l0;

At the moment is_branch_taken() reports the jump as always taken, because it does not distinguish between BPF_JMP and BPF_JMP32 comparisons when processing 'if w1 != 0 ...'.

Database specific

{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98041.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

cac616db39c207dc63465a4e05c6ce0e60b2cce4

Fixed

d16f0eafcaa62e677a2b5b0dabc1f8d31dfe3d4d

Fixed

e2ae33247e8b2dbe9d116d3e61cadf6d548339c6

Fixed

a4d7f94c1ca914469ced665ec2f98be669aef462

Fixed

e51179a4e09846f8fd0f26a05068520de2b301bf

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98041.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

5.8.0

Fixed

6.12.111

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.18.53

Type: ECOSYSTEM
Events: Introduced

6.19.0

Fixed

7.2.7

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98041.json"