CVE-2026-68158

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Source
https://cve.org/CVERecord?id=CVE-2026-68158
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68158.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-68158
Downstream
Published
2026-08-10T11:59:24Z
Modified
2026-08-21T03:30:13Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
libceph: Fix multiplication overflow in decode_new_up_state_weight()
Details

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

libceph: Fix multiplication overflow in decode_new_up_state_weight()

If a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted osdmap, out-of-bounds memory accesses may occur in decode_new_up_state_weight(). This happens because the bounds check for the new_state part is based on calculating its length depending on a len value read from the incoming message. This calculation may overflow leading to an incorrect bounds check. Subsequently, out-of-bounds reads may occur when decoding this part.

This patch switches the multiplication to use check_mul_overflow() to abort processing the osdmap if an overflow occurred. Therefore, osdmaps/messages containing large values for len that result in a multiplication overflow are treated as invalid.

[ idryomov: rename new_state_len -> new_state_item_size, formatting ]

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68158.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
930c532869774ebf8af9efe9484c597f896a7d46
Fixed
2ceee3b77b83052648c40fef965f836fd7699d26
Fixed
e4473751cc37db41f3f7da25d64a23e0c74570f1
Fixed
f6961070c326bd158c38fa48756cde2bd78c4aaa
Fixed
05c90e059269f087becfcce23348496085835c29
Fixed
143ba49ead77ec483c0326f8aaad8649874e99c4
Fixed
1732d89dfcd74f6fde9ce70900d316c4a151c153
Fixed
bee4b5b53e7bff0467fd916cc44c9b190733c6bd
Fixed
98917a499ec7064c14fc56d180a4fd636fc2784c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
1196c36fd53c3b1615eb02f986cb727b1dfc1047
Last Affected
bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196
Last Affected
6b96b2d473701b45df3fea8dd9796b6ec39e6d54
Last Affected
7405d73cea0d0e6c541f5c534078feeb46188844
Last Affected
8777c9f654637d56f4c4ca54eb1bc7c609b70085
Last Affected
6831c98ce0b8a3e88db64aa224372effd0dcc694
Last Affected
032951d32c13b7564dfba82758260cb7aa1149d2
Last Affected
14877928f10667a5606383885d004f7185f33718
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.10.103
Fixed
3.11
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.12.63
Fixed
3.13
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.14.75
Fixed
3.15
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.16.39
Fixed
3.17
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.18.39
Fixed
3.19
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.1.30
Fixed
4.2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.4.17
Fixed
4.5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4.6.6
Fixed
4.7

Affected versions

v2.*
v2.6.12-rc2
v2.6.12-rc3
v2.6.12-rc4
v2.6.13
v2.6.13-rc1
v2.6.13-rc2
v2.6.13-rc3
v2.6.13-rc4
v2.6.13-rc5
v2.6.13-rc6
v2.6.13-rc7
v2.6.14-rc1
v2.6.14-rc2
v2.6.14-rc3
v2.6.15-rc1
v2.6.15-rc2
v2.6.15-rc4
v2.6.15-rc5
v2.6.15-rc7
v2.6.16
v2.6.16-rc1
v2.6.16-rc2
v2.6.16-rc3
v2.6.16-rc4
v2.6.16-rc5
v2.6.16-rc6
v2.6.17
v2.6.17-rc1
v2.6.17-rc2
v2.6.17-rc3
v2.6.17-rc4
v2.6.17-rc5
v2.6.17-rc6
v2.6.18
v2.6.18-rc1
v2.6.18-rc2
v2.6.18-rc3
v2.6.18-rc5
v2.6.18-rc6
v2.6.19-rc1
v2.6.19-rc2
v2.6.20-rc1
v2.6.20-rc2
v2.6.20-rc3
v2.6.20-rc4
v2.6.20-rc5
v2.6.20-rc6
v2.6.20-rc7
v2.6.21
v2.6.21-rc1
v2.6.21-rc2
v2.6.21-rc3
v2.6.21-rc4
v2.6.21-rc5
v2.6.21-rc6
v2.6.21-rc7
v2.6.22
v2.6.22-rc1
v2.6.22-rc2
v2.6.22-rc3
v2.6.22-rc4
v2.6.22-rc5
v2.6.22-rc6
v2.6.22-rc7
v2.6.23
v2.6.23-rc1
v2.6.23-rc2
v2.6.23-rc3
v2.6.23-rc4
v2.6.23-rc5
v2.6.23-rc6
v2.6.23-rc7
v2.6.23-rc8
v2.6.23-rc9
v2.6.24
v2.6.24-rc1
v2.6.24-rc2
v2.6.24-rc3
v2.6.24-rc4
v2.6.24-rc5
v2.6.24-rc6
v2.6.24-rc7
v2.6.24-rc8
v2.6.25
v2.6.25-rc1
v2.6.25-rc2
v2.6.25-rc3
v2.6.25-rc4
v2.6.25-rc5
v2.6.25-rc6
v2.6.25-rc7
v2.6.25-rc8
v2.6.25-rc9
v2.6.26
v2.6.26-rc1
v2.6.26-rc2
v2.6.26-rc3
v2.6.26-rc4
v2.6.26-rc5
v2.6.26-rc6
v2.6.26-rc7
v2.6.26-rc8
v2.6.26-rc9
v2.6.27
v2.6.27-rc1
v2.6.27-rc2
v2.6.27-rc3
v2.6.27-rc4
v2.6.27-rc5
v2.6.27-rc6
v2.6.27-rc7
v2.6.27-rc8
v2.6.27-rc9
v2.6.28
v2.6.28-rc1
v2.6.28-rc2
v2.6.28-rc3
v2.6.28-rc4
v2.6.28-rc5
v2.6.28-rc6
v2.6.28-rc7
v2.6.28-rc8
v2.6.28-rc9
v2.6.29
v2.6.29-rc1
v2.6.29-rc2
v2.6.29-rc3
v2.6.29-rc4
v2.6.29-rc5
v2.6.29-rc6
v2.6.29-rc7
v2.6.29-rc8
v2.6.30
v2.6.30-rc1
v2.6.30-rc2
v2.6.30-rc3
v2.6.30-rc4
v2.6.30-rc5
v2.6.30-rc6
v2.6.30-rc7
v2.6.30-rc8
v2.6.31
v2.6.31-rc1
v2.6.31-rc2
v2.6.31-rc3
v2.6.31-rc4
v2.6.31-rc5
v2.6.31-rc6
v2.6.31-rc7
v2.6.31-rc8
v2.6.31-rc9
v2.6.32
v2.6.32-rc1
v2.6.32-rc2
v2.6.32-rc3
v2.6.32-rc4
v2.6.32-rc5
v2.6.32-rc6
v2.6.32-rc7
v2.6.32-rc8
v2.6.33
v2.6.33-rc1
v2.6.33-rc2
v2.6.33-rc3
v2.6.33-rc4
v2.6.33-rc5
v2.6.33-rc6
v2.6.33-rc7
v2.6.33-rc8
v2.6.34
v2.6.34-rc1
v2.6.34-rc2
v2.6.34-rc3
v2.6.34-rc4
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v2.6.35
v2.6.35-rc1
v2.6.35-rc2
v2.6.35-rc3
v2.6.35-rc4
v2.6.35-rc5
v2.6.35-rc6
v2.6.36
v2.6.36-rc1
v2.6.36-rc2
v2.6.36-rc3
v2.6.36-rc4
v2.6.36-rc5
v2.6.36-rc6
v2.6.36-rc7
v2.6.36-rc8
v2.6.37
v2.6.37-rc1
v2.6.37-rc2
v2.6.37-rc3
v2.6.37-rc4
v2.6.37-rc5
v2.6.37-rc6
v2.6.37-rc7
v2.6.37-rc8
v2.6.38
v2.6.38-rc1
v2.6.38-rc2
v2.6.38-rc3
v2.6.38-rc4
v2.6.38-rc5
v2.6.38-rc6
v2.6.38-rc7
v2.6.38-rc8
v2.6.39
v2.6.39-rc1
v2.6.39-rc2
v2.6.39-rc3
v2.6.39-rc4
v2.6.39-rc5
v2.6.39-rc6
v2.6.39-rc7
v3.*
v3.0
v3.0-rc1
v3.0-rc2
v3.0-rc3
v3.0-rc4
v3.0-rc5
v3.0-rc6
v3.0-rc7
v3.1
v3.1-rc1
v3.1-rc10
v3.1-rc2
v3.1-rc3
v3.1-rc4
v3.1-rc5
v3.1-rc6
v3.1-rc7
v3.1-rc8
v3.1-rc9
v3.10
v3.10-rc1
v3.10-rc2
v3.10-rc3
v3.10-rc4
v3.10-rc5
v3.10-rc6
v3.10-rc7
v3.10.1
v3.10.10
v3.10.100
v3.10.101
v3.10.102
v3.10.11
v3.10.12
v3.10.13
v3.10.14
v3.10.15
v3.10.16
v3.10.17
v3.10.18
v3.10.19
v3.10.2
v3.10.20
v3.10.21
v3.10.22
v3.10.23
v3.10.24
v3.10.25
v3.10.26
v3.10.27
v3.10.28
v3.10.29
v3.10.3
v3.10.30
v3.10.31
v3.10.32
v3.10.33
v3.10.34
v3.10.35
v3.10.36
v3.10.37
v3.10.38
v3.10.39
v3.10.4
v3.10.40
v3.10.41
v3.10.42
v3.10.43
v3.10.44
v3.10.45
v3.10.46
v3.10.47
v3.10.48
v3.10.49
v3.10.5
v3.10.50
v3.10.51
v3.10.52
v3.10.53
v3.10.54
v3.10.55
v3.10.56
v3.10.57
v3.10.58
v3.10.59
v3.10.6
v3.10.60
v3.10.61
v3.10.62
v3.10.63
v3.10.64
v3.10.65
v3.10.66
v3.10.67
v3.10.68
v3.10.69
v3.10.7
v3.10.70
v3.10.71
v3.10.72
v3.10.73
v3.10.74
v3.10.75
v3.10.76
v3.10.77
v3.10.78
v3.10.79
v3.10.8
v3.10.80
v3.10.81
v3.10.82
v3.10.83
v3.10.84
v3.10.85
v3.10.86
v3.10.87
v3.10.88
v3.10.89
v3.10.9
v3.10.90
v3.10.91
v3.10.92
v3.10.93
v3.10.94
v3.10.95
v3.10.96
v3.10.97
v3.10.98
v3.10.99
v3.11
v3.11-rc1
v3.11-rc2
v3.11-rc3
v3.11-rc4
v3.11-rc5
v3.11-rc6
v3.11-rc7
v3.12
v3.12-rc1
v3.12-rc2
v3.12-rc3
v3.12-rc4
v3.12-rc5
v3.12-rc6
v3.12-rc7
v3.12.1
v3.12.10
v3.12.11
v3.12.12
v3.12.13
v3.12.14
v3.12.15
v3.12.16
v3.12.17
v3.12.18
v3.12.19
v3.12.2
v3.12.20
v3.12.21
v3.12.22
v3.12.23
v3.12.24
v3.12.25
v3.12.26
v3.12.27
v3.12.28
v3.12.29
v3.12.3
v3.12.30
v3.12.31
v3.12.32
v3.12.33
v3.12.34
v3.12.35
v3.12.36
v3.12.37
v3.12.38
v3.12.39
v3.12.4
v3.12.40
v3.12.41
v3.12.42
v3.12.43
v3.12.44
v3.12.45
v3.12.46
v3.12.47
v3.12.48
v3.12.49
v3.12.5
v3.12.50
v3.12.51
v3.12.52
v3.12.53
v3.12.54
v3.12.55
v3.12.56
v3.12.57
v3.12.58
v3.12.59
v3.12.6
v3.12.60
v3.12.61
v3.12.62
v3.12.7
v3.12.8
v3.12.9
v3.13
v3.13-rc1
v3.13-rc2
v3.13-rc3
v3.13-rc4
v3.13-rc5
v3.13-rc6
v3.13-rc7
v3.13-rc8
v3.14
v3.14-rc1
v3.14-rc2
v3.14-rc3
v3.14-rc4
v3.14-rc5
v3.14-rc6
v3.14-rc7
v3.14-rc8
v3.14.1
v3.14.10
v3.14.11
v3.14.12
v3.14.13
v3.14.14
v3.14.15
v3.14.16
v3.14.17
v3.14.18
v3.14.19
v3.14.2
v3.14.20
v3.14.21
v3.14.22
v3.14.23
v3.14.24
v3.14.25
v3.14.26
v3.14.27
v3.14.28
v3.14.29
v3.14.3
v3.14.30
v3.14.31
v3.14.32
v3.14.33
v3.14.34
v3.14.35
v3.14.36
v3.14.37
v3.14.38
v3.14.39
v3.14.4
v3.14.40
v3.14.41
v3.14.42
v3.14.43
v3.14.44
v3.14.45
v3.14.46
v3.14.47
v3.14.48
v3.14.49
v3.14.5
v3.14.50
v3.14.51
v3.14.52
v3.14.53
v3.14.54
v3.14.55
v3.14.56
v3.14.57
v3.14.58
v3.14.59
v3.14.6
v3.14.60
v3.14.61
v3.14.62
v3.14.63
v3.14.64
v3.14.65
v3.14.66
v3.14.67
v3.14.68
v3.14.69
v3.14.7
v3.14.70
v3.14.71
v3.14.72
v3.14.73
v3.14.74
v3.14.8
v3.14.9
v3.15
v3.15-rc1
v3.15-rc2
v3.15-rc3
v3.15-rc4
v3.15-rc5
v3.15-rc6
v3.15-rc7
v3.15-rc8
v3.16
v3.16-rc1
v3.16-rc2
v3.16-rc3
v3.16-rc4
v3.16-rc5
v3.16-rc6
v3.16-rc7
v3.16.1
v3.16.2
v3.16.3
v3.16.35
v3.16.36
v3.16.37
v3.16.38
v3.16.4
v3.16.5
v3.16.6
v3.16.7
v3.17
v3.17-rc1
v3.17-rc2
v3.17-rc3
v3.17-rc4
v3.17-rc5
v3.17-rc6
v3.17-rc7
v3.18
v3.18-rc1
v3.18-rc2
v3.18-rc3
v3.18-rc4
v3.18-rc5
v3.18-rc6
v3.18-rc7
v3.18.1
v3.18.10
v3.18.11
v3.18.12
v3.18.13
v3.18.14
v3.18.15
v3.18.16
v3.18.17
v3.18.18
v3.18.19
v3.18.2
v3.18.20
v3.18.21
v3.18.22
v3.18.23
v3.18.24
v3.18.25
v3.18.26
v3.18.27
v3.18.28
v3.18.29
v3.18.3
v3.18.30
v3.18.31
v3.18.32
v3.18.33
v3.18.34
v3.18.35
v3.18.36
v3.18.37
v3.18.38
v3.18.4
v3.18.5
v3.18.6
v3.18.7
v3.18.8
v3.18.9
v3.19
v3.19-rc1
v3.19-rc2
v3.19-rc3
v3.19-rc4
v3.19-rc5
v3.19-rc6
v3.19-rc7
v3.2
v3.2-rc1
v3.2-rc2
v3.2-rc3
v3.2-rc4
v3.2-rc5
v3.2-rc6
v3.2-rc7
v3.3
v3.3-rc1
v3.3-rc2
v3.3-rc3
v3.3-rc4
v3.3-rc5
v3.3-rc6
v3.3-rc7
v3.4
v3.4-rc1
v3.4-rc2
v3.4-rc3
v3.4-rc4
v3.4-rc5
v3.4-rc6
v3.4-rc7
v3.5
v3.5-rc1
v3.5-rc2
v3.5-rc3
v3.5-rc4
v3.5-rc5
v3.5-rc6
v3.5-rc7
v3.6
v3.6-rc1
v3.6-rc2
v3.6-rc3
v3.6-rc4
v3.6-rc5
v3.6-rc6
v3.6-rc7
v3.7
v3.7-rc1
v3.7-rc2
v3.7-rc3
v3.7-rc4
v3.7-rc5
v3.7-rc6
v3.7-rc7
v3.7-rc8
v3.8
v3.8-rc1
v3.8-rc2
v3.8-rc3
v3.8-rc4
v3.8-rc5
v3.8-rc6
v3.8-rc7
v3.9
v3.9-rc1
v3.9-rc2
v3.9-rc3
v3.9-rc4
v3.9-rc5
v3.9-rc6
v3.9-rc7
v3.9-rc8
v4.*
v4.0
v4.0-rc1
v4.0-rc2
v4.0-rc3
v4.0-rc4
v4.0-rc5
v4.0-rc6
v4.0-rc7
v4.1
v4.1-rc1
v4.1-rc2
v4.1-rc3
v4.1-rc4
v4.1-rc5
v4.1-rc6
v4.1-rc7
v4.1-rc8
v4.1.1
v4.1.10
v4.1.11
v4.1.12
v4.1.13
v4.1.14
v4.1.15
v4.1.16
v4.1.17
v4.1.18
v4.1.19
v4.1.2
v4.1.20
v4.1.21
v4.1.22
v4.1.23
v4.1.24
v4.1.25
v4.1.26
v4.1.27
v4.1.28
v4.1.29
v4.1.3
v4.1.4
v4.1.5
v4.1.6
v4.1.7
v4.1.8
v4.1.9
v4.2
v4.2-rc1
v4.2-rc2
v4.2-rc3
v4.2-rc4
v4.2-rc5
v4.2-rc6
v4.2-rc7
v4.2-rc8
v4.3
v4.3-rc1
v4.3-rc2
v4.3-rc3
v4.3-rc4
v4.3-rc5
v4.3-rc6
v4.3-rc7
v4.4
v4.4-rc1
v4.4-rc2
v4.4-rc3
v4.4-rc4
v4.4-rc5
v4.4-rc6
v4.4-rc7
v4.4-rc8
v4.4.1
v4.4.10
v4.4.11
v4.4.12
v4.4.13
v4.4.14
v4.4.15
v4.4.16
v4.4.2
v4.4.3
v4.4.4
v4.4.5
v4.4.6
v4.4.7
v4.4.8
v4.4.9
v4.5
v4.5-rc1
v4.5-rc2
v4.5-rc3
v4.5-rc4
v4.5-rc5
v4.5-rc6
v4.5-rc7
v4.6
v4.6-rc1
v4.6-rc2
v4.6-rc3
v4.6-rc4
v4.6-rc5
v4.6-rc6
v4.6-rc7
v4.6.1
v4.6.2
v4.6.3
v4.6.4
v4.6.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68158.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.7.0
Fixed
5.10.265
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.216
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.183
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68158.json"