OESA-2026-1202

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1202
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1202.json
JSON Data
https://api.test.osv.dev/v1/vulns/OESA-2026-1202
Upstream
Published
2026-01-23T12:23:04Z
Modified
2026-01-23T12:45:02.241259Z
Summary
glibc security update
Details

The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.

Security Fix(es):

Passing too large an alignment to the memalign suite of functions (memalign, posixmemalign, alignedalloc) 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.

Note that the attacker must have control over both, the size as well as the alignment arguments of the memalign function to be able to exploit this. The size parameter must be close enough to PTRDIFFMAX so as to overflow sizet along with the large alignment argument. This limits the malicious inputs for the alignment for memalign to the range [1<<62+ 1, 1<<63] and exactly 1<<63 for posixmemalign and alignedalloc.

Typically the alignment argument passed to such functions is a known constrained quantity (e.g. page size, block size, struct sizes) and is not attacker controlled, because of which this may not be easily exploitable in practice. An application bug could potentially result in the input alignment being too large, e.g. due to a different buffer overflow or integer overflow in the application or its dependent libraries, but that is again an uncommon usage pattern given typical sources of alignments.(CVE-2026-0861)

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.(CVE-2026-0915)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:22.03-LTS-SP4 / glibc

Package

Name
glibc
Purl
pkg:rpm/openEuler/glibc&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.34-172.oe2203sp4

Ecosystem specific 

{
    "noarch": [
        "glibc-help-2.34-172.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "glibc-2.34-172.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "glibc-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-all-langpacks-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-common-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-compat-2.17-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-debuginfo-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-debugsource-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-debugutils-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-devel-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-locale-archive-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-locale-source-2.34-172.oe2203sp4.x86_64.rpm",
        "glibc-nss-devel-2.34-172.oe2203sp4.x86_64.rpm",
        "libnsl-2.34-172.oe2203sp4.x86_64.rpm",
        "nscd-2.34-172.oe2203sp4.x86_64.rpm",
        "nss_modules-2.34-172.oe2203sp4.x86_64.rpm"
    ],
    "aarch64": [
        "glibc-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-all-langpacks-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-common-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-compat-2.17-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-debuginfo-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-debugsource-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-debugutils-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-devel-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-locale-archive-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-locale-source-2.34-172.oe2203sp4.aarch64.rpm",
        "glibc-nss-devel-2.34-172.oe2203sp4.aarch64.rpm",
        "libnsl-2.34-172.oe2203sp4.aarch64.rpm",
        "nscd-2.34-172.oe2203sp4.aarch64.rpm",
        "nss_modules-2.34-172.oe2203sp4.aarch64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1202.json"