CVE-2026-46303

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Source
https://cve.org/CVERecord?id=CVE-2026-46303
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46303.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-46303
Downstream
Related
Published
2026-06-08T15:46:30.642Z
Modified
2026-07-09T03:52:29.967161152Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
isofs: validate Rock Ridge CE continuation extent against volume size
Details

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

isofs: validate Rock Ridge CE continuation extent against volume size

rockcontinue() reads rs->contextent verbatim from the Rock Ridge CE record and passes it to sbbread() without checking that the block number is within the mounted ISO 9660 volume. commit e595447e177b ("[PATCH] rock.c: handle corrupted directories") added contoffset and contsize rejection for the CE continuation but did not validate the extent block number itself. commit f54e18f1b831 ("isofs: Fix infinite looping over CE entries") later capped the CE chain length at RRMAXCEENTRIES = 32 but again left the block number unchecked.

With a crafted ISO mounted via udisks2 (desktop optical auto-mount) or via CAPSYSADMIN mount, rs->contextent can therefore point at an out-of-range block or at blocks belonging to an adjacent filesystem on the same block device. sbbread() on an out-of-range block returns NULL cleanly via the block layer EIO path, so there is no memory-safety violation. For in-range reads of adjacent- filesystem data, the CE buffer is parsed as Rock Ridge records and only the text of SL sub-records reaches userspace through readlink(), which makes the info-leak channel narrow and difficult to exploit; still, rejecting the malformed CE outright matches the rejection shape already present in the same function for contoffset and contsize.

Add an ISOFSSB(sb)->snzones bounds check to rock_continue() next to the existing offset/size rejection, printing the same corrupted-directory-entry notice.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46303.json",
    "cna_assigner": "Linux"
}
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
f54e18f1b831c92f6512d2eedb224cd63d607d3d
Fixed
8356fb821016797f5677cbeee5ddc0d32a95b4be
Fixed
d582e12378bc1637f337622feef762f53c43fd57
Fixed
bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9
Fixed
c9b37c8b73f6368e4750e5ccb0632c380b43c6e5
Fixed
22b36fa081f38ab397c7697f9d539211b51a0cfc
Fixed
e69da8eeab74b4f4505024c38a17bce060fe7df8
Fixed
ef048470c90bc8c1b8318bb2ce329da9ef64b9fe
Fixed
a36d990f591320e9dd379ab30063ebfe91d47e1f
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
08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56
Last affected
212c4d33ca83e2144064fe9c2911607fbed5386f
Last affected
96e44adce250199ec9b2b928be66365779ff1b59
Last affected
1fe5620fcd6c2f0a4a927ee10c8e53196da392f3
Last affected
fbce0d7dc8965c9fb8d411862040239d4a768c71
Last affected
8190393a88f2b0321263a54f2a9eb5a2aa43be7e
Last affected
486aa789eadcf44ed87f972b209299c516454693
Last affected
b6d20edb6e7cedb4eedb9e0193d20dd488ebae84
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
2.6.32.66
Fixed
2.6.33
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.2.67
Fixed
3.3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.4.107
Fixed
3.5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.10.64
Fixed
3.11
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.12.36
Fixed
3.13
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.14.28
Fixed
3.15
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.17.8
Fixed
3.18
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.18.2
Fixed
3.19

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
v2.6.32.1
v2.6.32.10
v2.6.32.11
v2.6.32.12
v2.6.32.13
v2.6.32.14
v2.6.32.15
v2.6.32.16
v2.6.32.17
v2.6.32.18
v2.6.32.19
v2.6.32.2
v2.6.32.20
v2.6.32.21
v2.6.32.22
v2.6.32.23
v2.6.32.24
v2.6.32.25
v2.6.32.26
v2.6.32.27
v2.6.32.28
v2.6.32.29
v2.6.32.3
v2.6.32.30
v2.6.32.31
v2.6.32.32
v2.6.32.33
v2.6.32.34
v2.6.32.35
v2.6.32.36
v2.6.32.37
v2.6.32.38
v2.6.32.39
v2.6.32.4
v2.6.32.40
v2.6.32.41
v2.6.32.42
v2.6.32.43
v2.6.32.44
v2.6.32.45
v2.6.32.46
v2.6.32.47
v2.6.32.48
v2.6.32.49
v2.6.32.5
v2.6.32.50
v2.6.32.51
v2.6.32.52
v2.6.32.53
v2.6.32.54
v2.6.32.55
v2.6.32.56
v2.6.32.57
v2.6.32.58
v2.6.32.59
v2.6.32.6
v2.6.32.60
v2.6.32.61
v2.6.32.62
v2.6.32.63
v2.6.32.64
v2.6.32.65
v2.6.32.7
v2.6.32.8
v2.6.32.9
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
v3.10.11
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
v3.10.7
v3.10.8
v3.10.9
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
v3.12.4
v3.12.5
v3.12.6
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
v3.14.3
v3.14.4
v3.14.5
v3.14.6
v3.14.7
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
v3.17
v3.17-rc1
v3.17-rc2
v3.17-rc3
v3.17-rc4
v3.17-rc5
v3.17-rc6
v3.17-rc7
v3.17.1
v3.17.2
v3.17.3
v3.17.4
v3.17.5
v3.17.6
v3.17.7
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
v3.2
v3.2-rc1
v3.2-rc2
v3.2-rc3
v3.2-rc4
v3.2-rc5
v3.2-rc6
v3.2-rc7
v3.2.1
v3.2.10
v3.2.11
v3.2.12
v3.2.13
v3.2.14
v3.2.15
v3.2.16
v3.2.17
v3.2.18
v3.2.19
v3.2.2
v3.2.20
v3.2.21
v3.2.22
v3.2.23
v3.2.24
v3.2.25
v3.2.26
v3.2.27
v3.2.28
v3.2.29
v3.2.3
v3.2.30
v3.2.31
v3.2.32
v3.2.33
v3.2.34
v3.2.35
v3.2.36
v3.2.37
v3.2.38
v3.2.39
v3.2.4
v3.2.40
v3.2.41
v3.2.42
v3.2.43
v3.2.44
v3.2.45
v3.2.46
v3.2.47
v3.2.48
v3.2.49
v3.2.5
v3.2.50
v3.2.51
v3.2.52
v3.2.53
v3.2.54
v3.2.55
v3.2.56
v3.2.57
v3.2.58
v3.2.59
v3.2.6
v3.2.60
v3.2.61
v3.2.62
v3.2.63
v3.2.64
v3.2.65
v3.2.66
v3.2.7
v3.2.8
v3.2.9
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
v3.4.1
v3.4.10
v3.4.100
v3.4.101
v3.4.102
v3.4.103
v3.4.104
v3.4.105
v3.4.106
v3.4.11
v3.4.12
v3.4.13
v3.4.14
v3.4.15
v3.4.16
v3.4.17
v3.4.18
v3.4.19
v3.4.2
v3.4.20
v3.4.21
v3.4.22
v3.4.23
v3.4.24
v3.4.25
v3.4.26
v3.4.27
v3.4.28
v3.4.29
v3.4.3
v3.4.30
v3.4.31
v3.4.32
v3.4.33
v3.4.34
v3.4.35
v3.4.36
v3.4.37
v3.4.38
v3.4.39
v3.4.4
v3.4.40
v3.4.41
v3.4.42
v3.4.43
v3.4.44
v3.4.45
v3.4.46
v3.4.47
v3.4.48
v3.4.49
v3.4.5
v3.4.50
v3.4.51
v3.4.52
v3.4.53
v3.4.54
v3.4.55
v3.4.56
v3.4.57
v3.4.58
v3.4.59
v3.4.6
v3.4.60
v3.4.61
v3.4.62
v3.4.63
v3.4.64
v3.4.65
v3.4.66
v3.4.67
v3.4.68
v3.4.69
v3.4.7
v3.4.70
v3.4.71
v3.4.72
v3.4.73
v3.4.74
v3.4.75
v3.4.76
v3.4.77
v3.4.78
v3.4.79
v3.4.8
v3.4.80
v3.4.81
v3.4.82
v3.4.83
v3.4.84
v3.4.85
v3.4.86
v3.4.87
v3.4.88
v3.4.89
v3.4.9
v3.4.90
v3.4.91
v3.4.92
v3.4.93
v3.4.94
v3.4.95
v3.4.96
v3.4.97
v3.4.98
v3.4.99
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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46303.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.19.0
Fixed
5.10.258
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.209
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.175
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.140
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.88
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.30
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.0.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46303.json"