7.5

CVE-2026-98175: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-98175DEBIAN-CVE-2026-98175
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98175 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.33%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12131-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: cancel reconnect work in clean_demultiplex_info() clean_demultiplex_info() cancels server->echo delayed work but not server->reconnect, which can cause a use-after-free when the demultiplex thread exits while a reconnect work is still queued: cifs_demultiplex_thread() cifs_readv_from_socket() cifs_reconnect() __cifs_reconnect() cifs_queue_server_reconn() mod_delayed_work(cifsiod_wq, &server->reconnect, 0) clean_demultiplex_info() cancel_delayed_work_sync(&server->echo) // echo canceled // reconnect NOT canceled kfree_sensitive(server) // server freed ...later, on cifsiod_wq: smb2_reconnect_server() server->srv_count // UAF read of freed server Fix this by canceling server->reconnect delayed work in clean_demultiplex_info() before the server is freed, the same way cifs_put_tcp_session() already does.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

24%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 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)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ 53e0e11efe9289535b060a51d4cf37c25e0d0f2b, < 180380272f116dbd2b0354c5c7872e112e519149 | ≥ 53e0e11efe9289535b060a51d4cf37c25e0d0f2b, < e3f6a779433d13aafb5edab59e4f9313051e8a52 | ≥ 53e0e11efe9289535b060a51d4cf37c25e0d0f2b, < 7ab9ceedd860216fb97f2d8574cbe58b8906f42a | ≥ 53e0e11efe9289535b060a51d4cf37c25e0d0f2b, < 2e5103e11a17c274715dd56cf185eeedccf686b8 | ≥ 53e0e11efe9289535b060a51d4cf37c25e0d0f2b, < c65eae6f61d1778ff7a82e4aae4080e26f486af1 | e008a962311a875a828cbae54b43285858aaa6c8 | 123b228a09b90b50b0a9d6eb8294cf0c42efc029 | 0ba4c6eaaacbcc4b18f51bb3b1567c65a8fecca9 | d0d2a4c82942e2f51e4984beea1f7e5a994bd06c | 15a12fbbf365a483b1c19f9caeb707b3bea77e10 | f0b715409cb9cf7e21e690f9b163047739761962 | ff04da387c10b6bf7b510392742c8cd46c130fd6 | 48f9526f4dcb4b132fe0dc2450835311e3b013a6 | ≥ 3.10.107, < 3.11 | ≥ 3.12.70, < 3.13 | ≥ 3.16.42, < 3.17 | ≥ 3.18.47, < 3.19 | ≥ 4.1.38, < 4.2 | ≥ 4.4.40, < 4.5 | ≥ 4.8.16, < 4.9 | ≥ 4.9.1, < 4.10 | 4.10

3 vendors · 171 products

References

9 links