CVE-2026-98041 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-DEBIAN12-LINUX612-20507538
  • published5 Oct 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-98041  (opens in a new tab)

How to fix?

Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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 ...'.

CVSS Base Scores

version 3.1