7.8
CVE-2021-22555
- EPSS 78.68%
- Veröffentlicht 07.07.2021 12:15:08
- Zuletzt bearbeitet 27.10.2025 17:06:32
- Erkennungen
Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Netapp ≫ C400 Firmware Version -
Netapp ≫ C250 Firmware Version -
Netapp ≫ H410c Firmware Version -
Netapp ≫ H300s Firmware Version -
Netapp ≫ H500s Firmware Version -
Netapp ≫ H700s Firmware Version -
Netapp ≫ H410s Firmware Version -
Linux ≫ Linux Kernel Version >= 2.6.19 < 4.4.267
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.267
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.231
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.188
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.113
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.31
Linux ≫ Linux Kernel Version >= 5.11 < 5.12
Brocade ≫ Fabric Operating System Version -
Netapp ≫ Fas 8300 Firmware Version -
Netapp ≫ Fas 8700 Firmware Version -
Netapp ≫ Aff A400 Firmware Version -
Netapp ≫ Aff A250 Firmware Version -
Netapp ≫ Aff 500f Firmware Version -
Netapp ≫ H610c Firmware Version -
Netapp ≫ H610s Firmware Version -
Netapp ≫ H615c Firmware Version -
Netapp ≫ Cloud Backup Version -
Netapp ≫ Hci Management Node Version -
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Login06.10.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog
Linux Kernel Heap Out-of-Bounds Write Vulnerability
SchwachstelleLinux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
BeschreibungApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Erforderliche Maßnahmen| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 78.68% | 0.995 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 7.8 | 1.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| NIST | 4.6 | 3.9 | 6.4 |
AV:L/AC:L/Au:N/C:P/I:P/A:P
|
| cve-coordination@google.com | 8.3 | 1.6 | 6 |
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
|
CWE-787 Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html
http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html
http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d
https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528
https://security.netapp.com/advisory/ntap-20210805-0010/
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22555