7

CVE-2026-98041: bpf: Don't predict JMP32 pointer vs zero comparisons

Received
AliasesUBUNTU-CVE-2026-98041DEBIAN-CVE-2026-98041
Published 25-09-2026Last modified 21-10-2026

Vulnerability summary

CVE-2026-98041 is a high (CVSS 7.0) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 10
MGASA-2026-0506MGASA-2026-0542OPENSUSE-SU-2026:12074-1OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24386-1SUSE-SU-2026:24422-1

Timeline

  1. 25-09-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.14% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.12.111-1 | < 7.2.7-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ cac616db39c207dc63465a4e05c6ce0e60b2cce4, < 6e1544986536734166176c3add504add23bcbd15 | ≥ cac616db39c207dc63465a4e05c6ce0e60b2cce4, < d16f0eafcaa62e677a2b5b0dabc1f8d31dfe3d4d | ≥ cac616db39c207dc63465a4e05c6ce0e60b2cce4, < e2ae33247e8b2dbe9d116d3e61cadf6d548339c6 | ≥ cac616db39c207dc63465a4e05c6ce0e60b2cce4, < a4d7f94c1ca914469ced665ec2f98be669aef462 | ≥ cac616db39c207dc63465a4e05c6ce0e60b2cce4, < e51179a4e09846f8fd0f26a05068520de2b301bf | 5.8

3 vendors · 160 products

References

8 links