CVE-2024-2961
HighExploitedPublic exploitThe iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
Published Apr 17, 2024 · Updated Oct 15, 2026 · Also known as DEBIAN-CVE-2024-2961, DLA-3807-1, DSA-5673-1, SUSE-SU-2024:1375-1, SUSE-SU-2024:1675-1, SUSE-SU-2024:1728-1, SUSE-SU-2024:1805-1, SUSE-SU-2024:1977-1, UBUNTU-CVE-2024-2961, USN-6737-1, USN-6737-2
Key Facts
Patch immediately- CVE-2024-2961 is a high-severity vulnerability (CVSS 7.3 v3.1) affecting Glibc (Gnu), Active Iq Unified Manager (Netapp), Ontap Select Deploy Administration Utility (Netapp) and 22 more products.
- It is exploited in the wild, listed in Industry KEV feed since Sep 16, 2024. Public exploit code is available.
- EPSS estimates a 88% probability of exploitation in the next 30 days.
- Fixed versions are available, including compat-libpthread-nonshared 2.28-236.0.1.el8_9.13, compat-libpthread-nonshared 2.28-251.0.2.el8_10.1, compat-libpthread-nonshared 2.34-52.amzn2023.0.10.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS (30-day exploit likelihood)
88%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-2961 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Sep 16, 2024 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1,285 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| GlibcGnu | >= 2.1.93 | 2.40 |
| Active Iq Unified ManagerNetapp | See advisory | n/a |
| Ontap Select Deploy Administration UtilityNetapp | See advisory | n/a |
| Debian LinuxDebian | 10.0 | n/a |
| Hci Compute NodeNetapp | See advisory | n/a |
Patched Releases
compat-libpthread-nonshared
2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-52.amzn2023.0.10
eglibc
2.19-0ubuntu6.15+esm3
Glibc
0:2.17-326.el7_9.3, 0:2.28-189.10.el8_6, 0:2.34-28.el9_0.6, 2:2.17-326.0.6.ksplice1.el7_9.3, 2:2.17-326.0.9.ksplice1.el7_9.3, 2:2.34-100.0.1.ksplice1.el9_4.2, 2.11.3-17.110.52.1, 2.17-324.190.amzn1, 2.17-326.0.6.el7_9.3, 2.17-326.0.9.el7_9.3, 2.17-326.el7_9.3+sp999, 2.22-114.34.1, 2.23-0ubuntu11.3+esm6, 2.26-150000.13.73.1, 2.26-64.amzn2.0.1, 2.27-3ubuntu1.6+esm2, 2.28-10+deb10u3, 2.28-236.0.1.el8_9.13, 2.28-236.el8_9.13, 2.28-251.0.2.el8_10.1, 2.28-251.el8_10.1, 2.28-251.el8_10.11, 2.28-251.el8_10.11+sp999, 2.28-26.ph3, 2.31-0ubuntu9.15, 2.31-13+deb11u11+sp999, 2.31-13+deb11u9, 2.31-150300.74.1, 2.32-17.ph4, 2.34-100.0.1.el9_4.2, 2.34-100.el9_4.2, 2.34-125.el9_5.1+sp999, 2.34-52.amzn2023.0.10, 2.35-0ubuntu3.7, 2.36-10.ph5, 2.36-9+deb12u6, 2.37-18, 2.38-7.1, 2.39-0ubuntu8.1, 2.39-5.1, 2.39-r2, 2.40
glibc-2.34
2.34-r0
glibc-2.39
2.39-r0
glibc-32bit
2.11.3-17.110.52.1, 2.22-114.34.1, 2.26-150000.13.73.1, 2.31-150300.74.1
glibc-all-langpacks
2:2.34-100.0.1.ksplice1.el9_4.2, 2.26-64.amzn2.0.1, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10
glibc-benchtests
2:2.34-100.0.1.ksplice1.el9_4.2, 2.26-64.amzn2.0.1, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10
glibc-common
2:2.17-326.0.6.ksplice1.el7_9.3, 2:2.17-326.0.9.ksplice1.el7_9.3, 2:2.34-100.0.1.ksplice1.el9_4.2, 2.17-324.190.amzn1, 2.17-326.0.6.el7_9.3, 2.17-326.0.9.el7_9.3, 2.26-64.amzn2.0.1, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10
glibc-debuginfo-common
2.17-324.190.amzn1, 2.26-64.amzn2.0.1
glibc-devel
2:2.17-326.0.6.ksplice1.el7_9.3, 2:2.17-326.0.9.ksplice1.el7_9.3, 2:2.34-100.0.1.ksplice1.el9_4.2, 2.11.3-17.110.52.1, 2.17-324.190.amzn1, 2.17-326.0.6.el7_9.3, 2.17-326.0.9.el7_9.3, 2.22-114.34.1, 2.26-150000.13.73.1, 2.26-64.amzn2.0.1, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.31-150300.74.1, 2.32-17.ph4, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10, 2.36-10.ph5, 2.38-7.1, 2.39-5.1
glibc-devel-32bit
2.11.3-17.110.52.1, 2.22-114.34.1, 2.26-150000.13.73.1, 2.31-150300.74.1
glibc-devel-static
2.22-114.34.1, 2.26-150000.13.73.1, 2.31-150300.74.1, 2.39-5.1
glibc-devel-static-32bit
2.31-150300.74.1
glibc-doc
2:2.34-100.0.1.ksplice1.el9_4.2, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10
glibc-extra
2.26-150000.13.73.1, 2.31-150300.74.1, 2.39-5.1
glibc-gconv-extra
2:2.34-100.0.1.ksplice1.el9_4.2, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2, 2.34-52.amzn2023.0.10
glibc-headers
2:2.17-326.0.6.ksplice1.el7_9.3, 2:2.17-326.0.9.ksplice1.el7_9.3, 2:2.34-100.0.1.ksplice1.el9_4.2, 2.17-324.190.amzn1, 2.17-326.0.6.el7_9.3, 2.17-326.0.9.el7_9.3, 2.26-64.amzn2.0.1, 2.28-236.0.1.el8_9.13, 2.28-251.0.2.el8_10.1, 2.34-100.0.1.el9_4.2
glibc-headers-x86
2.34-52.amzn2023.0.10
glibc-html
2.11.3-17.110.52.1, 2.22-114.34.1, 2.31-150300.74.1, 2.39-5.1
glibc-i18n
2.32-17.ph4, 2.36-10.ph5
glibc-i18ndata
2.11.3-17.110.52.1, 2.22-114.34.1, 2.26-150000.13.73.1, 2.31-150300.74.1, 2.39-5.1
glibc-iconv
2.32-17.ph4, 2.36-10.ph5
glibc-info
2.11.3-17.110.52.1, 2.22-114.34.1, 2.26-150000.13.73.1, 2.31-150300.74.1, 2.39-5.1
glibc-lang
2.31-150300.74.1, 2.32-17.ph4, 2.36-10.ph5, 2.39-5.1
Timeline
Publicly disclosed
Apr 17, 2024
Added to Industry KEV feed
Sep 16, 2024
Last updated
Oct 15, 2026
Weakness Type
- CWE-787 Out-of-bounds Write
References
- advisoryRHSA-2024:2722
- advisoryRHSA-2024:2799
- advisoryRHSA-2024:3269
- advisoryRHSA-2024:3309
- advisoryRHSA-2024:3312
FAQ
Common Questions.
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
Affected: Glibc (Gnu) versions >= 2.1.93; Active Iq Unified Manager (Netapp); Ontap Select Deploy Administration Utility (Netapp), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Sep 16, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including compat-libpthread-nonshared 2.28-236.0.1.el8_9.13, compat-libpthread-nonshared 2.28-251.0.2.el8_10.1, compat-libpthread-nonshared 2.34-52.amzn2023.0.10.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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