CVE-2011-1089 · cross-distro fix matrix

CVE-2011-1089: The addmntent function in the GNU C Library (aka glibc or libc6) 2.13 and earlier does not report an error status for failed attempts to write to the /etc/mtab file, which makes it easier for local users to trigger corruption of this file, as demonstrated by writes from a process with a small RLIMIT

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2011-1089 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

glibc→ fixed in2.13-8urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y glibc
```

Debian bookworm

Source: Debian Security Tracker

glibc→ fixed in2.13-8urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y glibc
```

Debian trixie

Source: Debian Security Tracker

glibc→ fixed in2.13-8urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y glibc
```

Are YOU affected by CVE-2011-1089?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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