Disclosure and inode metadata skew via unchecked extent
Published Jun 8, 2026 · Updated Jun 8, 2026
Information disclosure in the Linux Kernel isofs driver allows remote attackers to read adjacent-filesystem data through exported mounts. rock_continue() passes the unvalidated Rock Ridge CE cont_extent block number to sb_bread(), allowing reads beyond the mounted ISO 9660 volume. Reachability requires an exported isofs mount or a crafted ISO mounted via udisks2 or CAP_SYS_ADMIN; output is limited to parsed SL text, while other Rock Ridge records can skew inode metadata.
Summary
What happened
Information disclosure in the Linux Kernel isofs driver allows remote attackers to read adjacent-filesystem data through exported mounts. rock_continue() passes the unvalidated Rock Ridge CE cont_extent block number to sb_bread(), allowing reads beyond the mounted ISO 9660 volume. Reachability requires an exported isofs mount or a crafted ISO mounted via udisks2 or CAP_SYS_ADMIN; output is limited to parsed SL text, while other Rock Ridge records can skew inode metadata.
The record
- CVE
- CVE-2026-46303
- Published
- Jun 8, 2026
- Updated
- Jun 8, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-401, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 8, 2026CVE publishedPublication date reported by the CVE source.
- Jun 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56
- Affected versionversion=1fe5620fcd6c2f0a4a927ee10c8e53196da392f3
- Affected versionversion=212c4d33ca83e2144064fe9c2911607fbed5386f
- Affected versionversion=2.6.32.66 <2.6.33
- Affected versionversion=3.10.64 <3.11
- Affected versionversion=3.12.36 <3.13
- Affected versionversion=3.14.28 <3.15
- Affected versionversion=3.17.8 <3.18
- Affected versionversion=3.18.2 <3.19
- Affected versionversion=3.19
- Affected versionversion=3.2.67 <3.3
- Affected versionversion=3.4.107 <3.5
- Affected versionversion=486aa789eadcf44ed87f972b209299c516454693
- Affected versionversion=8190393a88f2b0321263a54f2a9eb5a2aa43be7e
- Affected versionversion=96e44adce250199ec9b2b928be66365779ff1b59
- Affected versionversion=b6d20edb6e7cedb4eedb9e0193d20dd488ebae84
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <22b36fa081f38ab397c7697f9d539211b51a0cfc
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <8356fb821016797f5677cbeee5ddc0d32a95b4be
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <a36d990f591320e9dd379ab30063ebfe91d47e1f
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <c9b37c8b73f6368e4750e5ccb0632c380b43c6e5
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <d582e12378bc1637f337622feef762f53c43fd57
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <e69da8eeab74b4f4505024c38a17bce060fe7df8
- Affected versionversion=f54e18f1b831c92f6512d2eedb224cd63d607d3d <ef048470c90bc8c1b8318bb2ce329da9ef64b9fe
- Affected versionversion=fbce0d7dc8965c9fb8d411862040239d4a768c71
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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