7.1

CVE-2026-98169: linux

CVSS: 7.1v3.1HighReceived
AliasesUBUNTU-CVE-2026-98169DEBIAN-CVE-2026-98169
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98169 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.4% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.43%
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: fix potential OOB read in smb3_enum_snapshots() If snapshot_array_size is smaller than GMT_TOKEN_SIZE, smb3_enum_snapshots() sets ret_data_len to sizeof(struct smb_snapshot_array) without verifying the actual length of the server's reply. Because SMB2_ioctl() places no lower bound on the server-supplied OutputCount and allocates retbuf to exactly that length, a short reply results in ret_data_len exceeding the size of retbuf. The subsequent copy_to_user() then reads past the end of retbuf, leaking adjacent slab memory to userspace. The subsequent clamp check is ineffective as it only reduces ret_data_len. Fix this by rejecting replies shorter than sizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set to the 12-byte struct size rather than the 16-byte MIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes is exactly what copy_to_user() attempts to read.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.43%

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

Ubuntu168 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) | < 6.1.190-1 | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ e02789a53d71334b067ad72eee5d4e88a0158083, < 15a221c734b9d044ab769e7e3606b2cab96fb65a | ≥ e02789a53d71334b067ad72eee5d4e88a0158083, < 74995ee8305a7c4d76ee70d6acd996a75eda3c03 | ≥ e02789a53d71334b067ad72eee5d4e88a0158083, < 210f0f1f67817e7d2348b86b5115a9b85ef5c98b | ≥ e02789a53d71334b067ad72eee5d4e88a0158083, < 1cdf0d304d820fb13bf0faf532c3459600f9ea43 | ≥ e02789a53d71334b067ad72eee5d4e88a0158083, < dbe452a905dfe2804647530a9ff3d7e3826ed04d | ≥ e02789a53d71334b067ad72eee5d4e88a0158083, < 4775c3b7a597907e0b97556c7986fda238a377ae | a94703ff8e3647f8a9a3a92a468450299a7b77e9 | 82a856f527334ffd69aae26e7dd9e03b19c4a520 | 25b981bfe192fd208ba04c81f4aa30ffb5141660 | ≥ 4.9.125, < 4.10 | ≥ 4.14.68, < 4.15 | ≥ 4.18.6, < 4.19 | 4.19

3 vendors · 170 products

References

10 links