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Permalink CVE-2026-6368
2.1 LOW
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): High (H)
  • Attack Requirement (AT): Present (P)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): Low (L)
  • Vulnerable System Impact Integrity (VI): Low (L)
  • Vulnerable System Impact Availability (VA): Low (L)
  • Subsequent System Impact Confidentiality (SC): Low (L)
  • Subsequent System Impact Integrity (SI): Low (L)
  • Subsequent System Impact Availability (SA): Low (L)
  • Safety (S): Present (P)
  • Automatable (AU): Yes (Y)
  • Provider Urgency (U): Green (Green)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Attack Requirement (MAT): Present (P)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): Low (L)
  • Modified Vulnerable System Impact Integrity (MVI): Low (L)
  • Modified Vulnerable System Impact Availability (MVA): Low (L)
  • Modified Subsequent System Impact Confidentiality (MSC): Low (L)
  • Modified Subsequent System Impact Integrity (MSI): Low (L)
  • Modified Subsequent System Impact Availability (MSA): Low (L)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
updated 1 month ago by @LeSuisse Activity log
  • Created suggestion 1 month ago
  • @LeSuisse ignored
    15 packages
    • iconv
    • getent
    • mtrace
    • glibcInfo
    • glibcLocales
    • glibc_memusage
    • glibcLocalesUtf8
    • unixtools.getent
    • unixtools.locale
    • unixtools.getconf
    • minimal-bootstrap.glibc
    • glibc_multi
    • libiconv
    • getconf
    • locale
    1 month ago
  • @LeSuisse accepted 1 month ago
  • @LeSuisse published on GitHub 1 month ago
wordexp with WRDE_APPEND can return or use invalid memory

Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

Affected products

glibc
  • <2.43

Matching in nixpkgs

Ignored packages (15)

pkgs.mtrace

Perl script used to interpret and provide human readable output of the trace log contained in the file mtracedata, whose contents were produced by mtrace(3)

Package maintainers

Permalink CVE-2026-6791
6.6 MEDIUM
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): Low (L)
  • Vulnerable System Impact Integrity (VI): Low (L)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): Low (L)
  • Subsequent System Impact Availability (SA): High (H)
  • Exploit Maturity (E): Unreported (U)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): Low (L)
  • Modified Vulnerable System Impact Integrity (MVI): Low (L)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Low (L)
  • Modified Subsequent System Impact Availability (MSA): High (H)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
updated 1 month ago by @LeSuisse Activity log
  • Created suggestion 1 month ago
  • @LeSuisse ignored
    15 packages
    • iconv
    • getent
    • locale
    • mtrace
    • getconf
    • libiconv
    • glibcInfo
    • glibc_multi
    • glibcLocales
    • glibc_memusage
    • glibcLocalesUtf8
    • unixtools.getent
    • unixtools.locale
    • unixtools.getconf
    • minimal-bootstrap.glibc
    1 month ago
  • @LeSuisse accepted 1 month ago
  • @LeSuisse published on GitHub 1 month ago
Potential stack-based buffer clash during tilde expansion in wordexp

When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory. The implementation allocates memory for this username directly on the stack using the strndupa macro. Because the size of this allocation was determined by the length of the user-supplied input without any bounds checks, passing an excessively long username e.g. thousands of characters, forces the thread to exhaust its stack space. Thus if an application passes untrusted, attacker-controlled input to the wordexp function, an attacker can trigger a stack clash.

Affected products

glibc
  • =<2.43

Matching in nixpkgs

Ignored packages (15)

pkgs.mtrace

Perl script used to interpret and provide human readable output of the trace log contained in the file mtracedata, whose contents were produced by mtrace(3)

Package maintainers

https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2026-0013
Permalink CVE-2026-4438
updated 5 months, 3 weeks ago by @LeSuisse Activity log
  • Created suggestion 5 months, 3 weeks ago
  • @LeSuisse ignored
    26 packages
    • tests.hardeningFlags.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags-gcc.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-clang.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-gcc.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-clang.allExplicitDisabledGlibcxxAssertions
    • iconv
    • getent
    • locale
    • mtrace
    • getconf
    • libiconv
    • glibcInfo
    • glibc_multi
    • glibcLocales
    • glibc_memusage
    • glibcLocalesUtf8
    • unixtools.getent
    • unixtools.locale
    • unixtools.getconf
    5 months, 3 weeks ago
  • @LeSuisse accepted 5 months, 3 weeks ago
  • @LeSuisse published on GitHub 5 months, 3 weeks ago
gethostbyaddr and gethostbyaddr_r return invalid DNS hostnames

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.

Affected products

glibc
  • =<2.43

Matching in nixpkgs

Ignored packages (26)

pkgs.mtrace

Perl script used to interpret and provide human readable output of the trace log contained in the file mtracedata, whose contents were produced by mtrace(3)

Proposed patch: https://inbox.sourceware.org/libc-alpha/20260320194250.1089143-1-carlos@redhat.com/
Proposed advisory: https://inbox.sourceware.org/libc-alpha/20260320194804.1089897-2-carlos@redhat.com/
Permalink CVE-2026-0861
8.4 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
updated 7 months, 3 weeks ago by @LeSuisse Activity log
  • Created suggestion 7 months, 4 weeks ago
  • @LeSuisse ignored
    21 packages
    • tests.hardeningFlags-gcc.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags-clang.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-gcc.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-clang.allExplicitDisabledGlibcxxAssertions
    • glibcLocalesUtf8
    • unixtools.getent
    • unixtools.locale
    • unixtools.getconf
    • getent
    • locale
    • iconv
    • mtrace
    • getconf
    • libiconv
    • glibcInfo
    • glibcLocales
    7 months, 3 weeks ago
  • @LeSuisse accepted 7 months, 3 weeks ago
  • @LeSuisse published on GitHub 7 months, 3 weeks ago
Integer overflow in memalign leads to heap corruption

Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign, aligned_alloc, valloc, pvalloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could consequently result in a heap corruption.

Affected products

glibc
  • =<2.42

Matching in nixpkgs

Ignored packages (20)

pkgs.mtrace

Perl script used to interpret and provide human readable output of the trace log contained in the file mtracedata, whose contents were produced by mtrace(3)

Package maintainers

https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0001