CVE-2021-33456
published 2022-07-26CVE-2021-33456: An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in hash() in modules/preprocs/nasm/nasm-pp.c.
PriorityP416medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
0.31%
23.0th percentile
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in hash() in modules/preprocs/nasm/nasm-pp.c.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | yasm | < yasm 1.3.0-8 (forky) | yasm 1.3.0-8 (forky) |
| msrc | azl3_yasm_1.3.0-17_on_azure_linux_3.0 | — | — |
| msrc | cbl2_yasm_1.3.0-16_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_yasm_1.3.0-14_on_cbl_mariner_1.0 | — | — |
| tortall | yasm | — | — |
| yasm_project | yasm | >= 0 < 1.3.0-8 | 1.3.0-8 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
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GHSA
GHSA-jm6f-2xgv-f2ch: An issue was discovered in yasm version 1
ghsa_unreviewed·2022-07-27
CVE-2021-33456 [MEDIUM] CWE-476 GHSA-jm6f-2xgv-f2ch: An issue was discovered in yasm version 1
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in hash() in modules/preprocs/nasm/nasm-pp.c.
OSV
CVE-2021-33456: An issue was discovered in yasm version 1
osv·2022-07-26·CVSS 5.5
CVE-2021-33456 [MEDIUM] CVE-2021-33456: An issue was discovered in yasm version 1
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in hash() in modules/preprocs/nasm/nasm-pp.c.
Microsoft
There is a NULL pointer dereference in hash() in yasm version 1.3.0
vendor_msrc·2022-07-12·CVSS 5.5
CVE-2021-33456 [MEDIUM] There is a NULL pointer dereference in hash() in yasm version 1.3.0
There is a NULL pointer dereference in hash() in yasm version 1.3.0
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 will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: h
Debian
CVE-2021-33456: yasm - An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereferen...
vendor_debian·2021·CVSS 5.5
CVE-2021-33456 [MEDIUM] CVE-2021-33456: yasm - An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereferen...
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in hash() in modules/preprocs/nasm/nasm-pp.c.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 1.3.0-8)
sid: resolved (fixed in 1.3.0-8)
trixie: open
No detection rules found.
No public exploits indexed.
2022-07-26
Published