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CVE

CVE-2026-46185

smb/client: fix out-of-bounds read in symlink_data()
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CVE

CVE-2026-46185

smb/client: fix out-of-bounds read in symlink_data()

In the Linux kernel, the following vulnerability has been resolved:

smb/client: fix out-of-bounds read in symlink_data()

Since smb2checkmessage() returns success without length validation for

the symlink error response, in symlink_data() it is possible for

iov->iovlen to be smaller than sizeof(struct smb2err_rsp). If the buffer

only contains the base SMB2 header (64 bytes), accessing

err->ErrorContextCount (at offset 66) or err->ByteCount later in

symlink_data() will cause an out-of-bounds read.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/15dc0a4de743a1aaa7b859b3aea79f08c695396c, https://git.kernel.org/stable/c/2be11faf79e49fb8250a181ff0b4d2b2f084af83, https://git.kernel.org/stable/c/b8c8a704f0bc133deb171f6aeb6f3a684203e212, https://git.kernel.org/stable/c/b9561402489d41149f63e001a74384863b7b30a6, https://git.kernel.org/stable/c/d62b8d236fab503c6fec1d3e9a38bea71feaca20, https://git.kernel.org/stable/c/ef6495d4df6e7af8f3de67e65150881c880f696c, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46185.json, https://nvd.nist.gov/vuln/detail/CVE-2026-46185, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00513%
EPSS Percentile
0.41632%
Introduced Version
76894f3e2f71177747b8b4763fb180e800279585,0,6.0.16,6.1.0,6.2.0,6.7.0,6.13.0,6.19.0
Fix Available
d62b8d236fab503c6fec1d3e9a38bea71feaca20,6.1,6.1.175,6.6.140,6.12.88,6.18.30,7.0.7,6.1.176-1,6.1.176-1~deb11u1,6.12.88-1,6.8.0-134.134,6.8.0-1060.63,6.17.0-1019.19~24.04.1,6.8.0-1063.71,6.17.0-1021.21~24.04.1,6.8.0-1062.69,6.8.0-1063.69,6.17.0-1020.22~24.04.1,6.8.0-1058.64,6.8.0-1045.48,6.17.0-40.40~24.04.1,7.0.0-28.28~24.04.1,6.8.0-1060.61,6.8.0-134.134.1,6.8.0-1058.61,6.17.0-1026.26,6.8.0-1058.61.1,6.8.0-1029.30,6.17.0-1028.28,6.8.0-1057.58,6.17.0-1018.18~24.04.1,6.8.0-1060.64,6.8.0-1032.33,6.8.0-1060.63~22.04.1,6.8.0-1063.71~22.04.1,6.8.0-1062.69~22.04.1,6.8.0-1063.69~22.04.1,6.8.0-136.136~22.04.1,6.8.0-1060.61~22.04.1,6.8.0-134.134.1~22.04.1,6.8.0-1058.61~22.04.1,6.8.0-1057.58~22.04.1,6.8.0-134.134~22.04.1,1:6.12.88-119.157.amzn2023,1:1.0-0.amzn2023,1:6.18.30-61.116.amzn2023,1:6.1.175-219.357.amzn2023

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