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CVE

CVE-2021-22555

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
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CVE

CVE-2021-22555

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.

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

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.3
-
3.1
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?fieldcve=CVE-2021-22555, 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-xtables-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/xtables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/xtables.c?id=b29c457a6511435960115c0f548c4360d5f4801d, https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528, https://security.netapp.com/advisory/ntap-20210805-0010/, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/xtables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/xtables.c?id=b29c457a6511435960115c0f548c4360d5f4801d, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/xtables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/xtables.c?id=b29c457a6511435960115c0f548c4360d5f4801d, 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://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528

Severity

7.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.8
EPSS Probability
0.85239%
EPSS Percentile
0.99332%
Introduced Version
f40ddce88593482919761f74910f42f4b84c004b,0
Fix Available
9f4ad9e425a1d3b6a34617b8ea226d56a119a717,0:3.10.0-1160.41.1.el7,0:1-8.el7,0:1-7.el7,0:1-1.el7,0:1-5.el7,0:1-3.el7,0:1-2.el7,0:3.10.0-1160.41.1.rt56.1181.el7,0:4.18.0-305.12.1.el8_4,0:4.18.0-305.12.1.rt7.84.el8_4,0:1-4.el8,0:1-3.el8_4,0:1-2.el8_4,0:1-1.el8_4,5.10.38-1,0:4.15.0-144.148,0:5.4.0-74.83~18.04.1,0:4.15.0-1092.94,0:4.15.0-1103.110,0:5.4.0-1049.51~18.04.1,0:4.15.0-1115.128,0:5.4.0-1048.50~18.04.1,0:4.15.0-1022.26,0:4.15.0-1100.113,0:5.4.0-1044.47~18.04.2,0:5.4.0-1044.46~18.04.1,0:5.4.0-1016.17~18.04.1,0:4.15.0-1072.80,0:5.4.0-1046.50~18.04.2,0:4.15.0-1086.91,0:5.4.0-1036.39~18.04.1,0:4.15.0-1103.112,0:5.4.0-74.83,0:5.8.0-55.62~20.04.1,0:5.4.0-1040.41,0:5.4.0-1049.51,0:5.4.0-1048.50,0:5.4.0-1044.47,0:5.4.0-1044.46,0:5.4.0-1016.17,0:5.4.0-1046.50,0:5.10.0-1025.26,0:5.4.0-1036.39,0:5.4.0-1012.15,0:4.1.12-124.53.5.el7uek,0:4.14.231-173.360.amzn2,0:1.0-0.amzn2

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