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CVE-2026-98547VulnerabilityPublished Updated

prb_calc_retire_blk_tmo() · af_packet: fix integer overflow

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98547· High

Not known to be exploited · fixed in eb5b3838b9200dac04bfe33483db0ee8287456fb : patch Microsoft soon.

Data as of 2 Nov 2026, 10:58 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in eb5b3838b9200dac04bfe33483db0ee8287456fb, be1aacff399d519cc48d6b34354a54dd79041140, b2bcc6a254d6f27823a56787668ae4ee8cdb6e71 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < eb5b3838b9200dac04bfe33483db0ee8287456fb
Fixed in
  • eb5b3838b9200dac04bfe33483db0ee8287456fb
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < be1aacff399d519cc48d6b34354a54dd79041140
Fixed in
  • be1aacff399d519cc48d6b34354a54dd79041140
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < b2bcc6a254d6f27823a56787668ae4ee8cdb6e71
Fixed in
  • b2bcc6a254d6f27823a56787668ae4ee8cdb6e71
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < 6279211e7d2456ecd195d236c9ee5e5c6fa5a17a
Fixed in
  • 6279211e7d2456ecd195d236c9ee5e5c6fa5a17a
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < 297acc571d5813db76b147c745b91031d5f9c960
Fixed in
  • 297acc571d5813db76b147c745b91031d5f9c960
LinuxLinuxAffected
  • ≥ f6fb8f100b807378fda19e83e5ac6828b638603a, < 218a944b9e035d4b47d59c69af6ca13319da15fb
Fixed in
  • 218a944b9e035d4b47d59c69af6ca13319da15fb

Description

CVE-2026-98547 is a vulnerability in Microsoft products version 3.0 and 4.0 involving an integer overflow in the function prb_calc_retire_blk_tmo(). No CVSS score or detailed impact information is provided. There is no indication of known exploitation in the wild or available patches.

References

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