CVE-2021-45868
published 2022-03-18CVE-2021-45868: In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a…
PriorityP421medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
1.34%
68.5th percentile
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.3-1 (bookworm) | linux 5.15.3-1 (bookworm) |
| linux | linux_kernel | < 5.15.3 | 5.15.3 |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 5.15.3-1 | 5.15.3-1 |
| linux | linux_kernel | >= 0 < 4.4.0-239.273 | 4.4.0-239.273 |
| msrc | cm1_kernel_5.10.109.1-2_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_ubuntu5.9MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2023-04-12·CVSS 5.9
CVE-2022-1516 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP
implementation in the Linux kernel did not properly handle IPID assignment.
A remote attacker could use this to cause a denial of service (connection
termination) or inject forged data. (CVE-2020-36516)
Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)
Jürgen Groß discovered that the Xen subsystem within the Linux kernel did
not adequately l
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2023-04-12·CVSS 5.9
CVE-2023-1095 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP
implementation in the Linux kernel did not properly handle IPID assignment.
A remote attacker could use this to cause a denial of service (connection
termination) or inject forged data. (CVE-2020-36516)
Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)
Jürgen Groß discovered that the Xen subsystem within the Linux kernel did
not adequately limit t
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2023-04-06·CVSS 5.9
CVE-2023-1095 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP
implementation in the Linux kernel did not properly handle IPID assignment.
A remote attacker could use this to cause a denial of service (connection
termination) or inject forged data. (CVE-2020-36516)
Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)
Jürgen Groß discovered that the Xen subsystem within the Linux kernel did
not adequately l
Red Hat
kernel: fs/quota/quota_tree.c does not validate the block number in the quota tree
vendor_redhat·2022-03-18·CVSS 5.5
CVE-2021-45868 [MEDIUM] CWE-416 kernel: fs/quota/quota_tree.c does not validate the block number in the quota tree
kernel: fs/quota/quota_tree.c does not validate the block number in the quota tree
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
A use-after-free vulnerability was found in the Linux kernel. The quota mechanism doesn't properly validate the quota block number, triggering a use-after-free bug in the RWSem code, leading to a denial of service.
Statement: The latest kernel version distributed with Red Hat Enterprise Linux 8 is not affected by this issue as it already contains the patch which prevents this issue to happen.
Package: kernel (Red Hat Enterprise Linux 6) - Will not fix
Package: kernel (Red Hat Ent
Microsoft
In the Linux kernel before 5.15.3 fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can for example lead to a kernel/locking/rwsem.c use-after-free if there is
vendor_msrc·2022-03-08·CVSS 5.5
CVE-2021-45868 [MEDIUM] CWE-416 In the Linux kernel before 5.15.3 fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can for example lead to a kernel/locking/rwsem.c use-after-free if there is
In the Linux kernel before 5.15.3 fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can for example lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identi
Debian
CVE-2021-45868: linux - In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the b...
vendor_debian·2021·CVSS 5.5
CVE-2021-45868 [MEDIUM] CVE-2021-45868: linux - In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the b...
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
Scope: local
bookworm: resolved (fixed in 5.15.3-1)
bullseye: resolved (fixed in 5.10.84-1)
forky: resolved (fixed in 5.15.3-1)
sid: resolved (fixed in 5.15.3-1)
trixie: resolved (fixed in 5.15.3-1)
OSV
linux, linux-kvm, linux-lts-xenial vulnerabilities
osv·2023-04-12·CVSS 5.9
CVE-2020-36516 [MEDIUM] linux, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-kvm, linux-lts-xenial vulnerabilities
Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP
implementation in the Linux kernel did not properly handle IPID assignment.
A remote attacker could use this to cause a denial of service (connection
termination) or inject forged data. (CVE-2020-36516)
Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)
Jürgen Groß discovered that the Xen subsystem within the Linux kernel did
not adequately limit the number of events driver domains (unprivileged PV
OSV
linux-aws vulnerabilities
osv·2023-04-06·CVSS 5.9
CVE-2020-36516 [MEDIUM] linux-aws vulnerabilities
linux-aws vulnerabilities
Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP
implementation in the Linux kernel did not properly handle IPID assignment.
A remote attacker could use this to cause a denial of service (connection
termination) or inject forged data. (CVE-2020-36516)
Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk,
Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre
Variant 2 mitigations for AMD processors on Linux were insufficient in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2021-26401)
Jürgen Groß discovered that the Xen subsystem within the Linux kernel did
not adequately limit the number of events driver domains (unprivileged PV
backends) could send to
GHSA
GHSA-99wm-68jg-pfgc: In the Linux kernel before 5
ghsa_unreviewed·2022-03-19
CVE-2021-45868 [MEDIUM] CWE-416 GHSA-99wm-68jg-pfgc: In the Linux kernel before 5
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
OSV
CVE-2021-45868: In the Linux kernel before 5
osv·2022-03-18·CVSS 5.5
CVE-2021-45868 [MEDIUM] CVE-2021-45868: In the Linux kernel before 5
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.kernel.org/show_bug.cgi?id=214655https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050https://security.netapp.com/advisory/ntap-20220419-0003/https://www.openwall.com/lists/oss-security/2022/03/17/1https://www.openwall.com/lists/oss-security/2022/03/17/2https://bugzilla.kernel.org/show_bug.cgi?id=214655https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050https://security.netapp.com/advisory/ntap-20220419-0003/https://www.openwall.com/lists/oss-security/2022/03/17/1https://www.openwall.com/lists/oss-security/2022/03/17/2
2022-03-18
Published