CVE-2026-52967

smb/client: fix possible infinite loop and oob read in symlink_data()

HIGH
8.1
CVSS Score
Published: June 24, 2026 at 04:28 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlink_data() On 32-bit architectures, the infinite loop is as follows: len = p->ErrorDataLength == 0xfffffff8 u8 *next = p->ErrorContextData + len next == p On 32-bit architectures, the out-of-bounds read is as follows: len = p->ErrorDataLength == 0xfffffff0 u8 *next = p->ErrorContextData + len next == (u8 *)p - 8

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.0.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.2 ≤ v < 6.6.1416.7 ≤ v < 6.12.912d046892a493d9760c35fdaefc3017f27f91b6216.0.167.17.1 rc17.1 rc27.1 rc376894f3e2f71177747b8b4763fb180e800279585
Vendor states this is fixed in 1b9331b16b0ed9414dcf7583d8134bdfeb117aae (fixed)
Vendor states this is fixed in 1cfa2d59f669db28d6292d10ff87ca6837c781b0 (fixed)
Vendor states this is fixed in 7d9a7f1f96cd617ee9e75bb22217c709038e26b8 (fixed)
Vendor states this is fixed in 97a05b0ae9ea5ec052be2eef0f9cc7ce03501bbb (fixed)
Vendor states this is fixed in b41598bf54b3fe528994e573df6008f8f4d0a4f4 (fixed)
Vendor states this is fixed in cd4b9b662f0fb9aa97ee6bf9034eca76fc6cab23 (fixed)
Vendor states this is fixed in 6.1 (unaffected)
Vendor states this is fixed in 6.1.175 (unaffected)
Vendor states this is fixed in 6.12.91 (unaffected)
Vendor states this is fixed in 6.18.33 (unaffected)
Vendor states this is fixed in 6.6.141 (unaffected)
Vendor states this is fixed in 7.0.10 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125CWE-190

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