Medium
rust-coreutils — security advisory
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.
- Products
- rust-coreutils
- Affected versions
- 0.0.20-1, 0.0.22-1, 0.0.23-1, 0.0.23-2, 0.0.23-3, 0.0.24-1, 0.0.24-2, 0.0.30-1, 0.0.30-2, 0.0.30-2ubuntu2, 0.1.0+git20250711.2ba3a33-0ubuntu1, 0.1.0+git20250711.2ba3a33-0ubuntu2, 0.1.0+git20250711.2ba3a33-0ubuntu3, 0.1.0+git20250711.2ba3a33-0ubuntu4, 0.1.0+git20250801.cf79675-0ubuntu1, 0.1.0+git20250813.4af2a84-0ubuntu2, 0.1.0+git20250813.4af2a84-0ubuntu4, 0.1.0+git20250813.4af2a84-0ubuntu6, 0.1.0+git20250813.4af2a84-0ubuntu7, 0.1.0-0ubuntu1, 0.10.0-1ubuntu1, 0.10.0-1ubuntu2, 0.10.0-1ubuntu2~26.04.1, 0.10.0-1ubuntu3, 0.11.0-2ubuntu1, 0.11.0-2ubuntu2, 0.12.0-1ubuntu1, 0.12.0-1ubuntu2, 0.2.2-0ubuntu1, 0.2.2-0ubuntu2, 0.2.2-0ubuntu2.1, 0.2.2-0ubuntu4, 0.5.0-0ubuntu1, 0.5.0-0ubuntu2, 0.6.0-0ubuntu1, 0.7.0-0ubuntu1, 0.8.0-0ubuntu3, 0.8.0-0ubuntu4, 0.9.0-2ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-35359
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:09 UTC · Revision 1
Source evidence
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.
osv:UBUNTU-CVE-2026-35359
rust-coreutils
Fixed versions: Not specified
rust-coreutils
Fixed versions: Not specified
rust-coreutils
Fixed versions: Not specified
rust-coreutils
Fixed versions: Not specified
Complete source record
{
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"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-35359",
"method": "structured",
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"title": "UBUNTU-CVE-2026-35359",
"summary": "A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.",
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"modified": "2026-10-17T12:58:12.875539509Z",
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