CVE-2021-4148
published 2022-03-23CVE-2021-4148: A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with…
PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.31%
22.9th percentile
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.16-1 (bookworm) | linux 5.14.16-1 (bookworm) |
| fedoraproject | fedora | — | — |
| linux | linux_kernel | < 5.14.16 | 5.14.16 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| msrc | cm1_kernel_5.10.111.1-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-42rf-8fff-r463: A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer
ghsa_unreviewed·2022-03-24
CVE-2021-4148 [MEDIUM] CWE-354 GHSA-42rf-8fff-r463: A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
OSV
CVE-2021-4148: A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer
osv·2022-03-23·CVSS 5.5
CVE-2021-4148 [MEDIUM] CVE-2021-4148: A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
Microsoft
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of servic
vendor_msrc·2022-03-08·CVSS 5.5
CVE-2021-4148 [MEDIUM] CWE-354 A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of servic
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
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 identified, we
Red Hat
kernel: Improper implementation of block_invalidatepage() allows users to crash the kernel
vendor_redhat·2021-09-13·CVSS 5.5
CVE-2021-4148 [MEDIUM] CWE-354 kernel: Improper implementation of block_invalidatepage() allows users to crash the kernel
kernel: Improper implementation of block_invalidatepage() allows users to crash the kernel
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Package: kernel (Red Hat
Debian
CVE-2021-4148: linux - A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffe...
vendor_debian·2021·CVSS 5.5
CVE-2021-4148 [MEDIUM] CVE-2021-4148: linux - A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffe...
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
Scope: local
bookworm: resolved (fixed in 5.14.16-1)
bullseye: resolved (fixed in 5.10.84-1)
forky: resolved (fixed in 5.14.16-1)
sid: resolved (fixed in 5.14.16-1)
trixie: resolved (fixed in 5.14.16-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2022-03-23
Published