CVE-2022-49748: perf/x86/amd: fix potential integer overflow on shift of a int
Vulnerability summary
CVE-2022-49748 is a medium (CVSS 5.5) Integer Overflow or Wraparound vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 4Timeline
- 27-03-2025PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd: fix potential integer overflow on shift of a int The left shift of int 32 bit integer constant 1 is evaluated using 32 bit arithmetic and then passed as a 64 bit function argument. In the case where i is 32 or more this can lead to an overflow. Avoid this by shifting using the BIT_ULL macro instead.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.19%
Chance of exploitation in the next 30 days
Percentile
9%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.19% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu109 products
- linux< 5.4.0-147.164 | < 5.15.0-70.77
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1100.108 | < 5.15.0-1034.38
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ d8a6a443ff0aea5893f0a7f2726973b496b76420, < fbf7b0e4cef3b5470b610f14fb9faa5ee7f63954 | ≥ 471af006a747f1c535c8a8c6c0973c320fe01b22, < f84c9b72fb200633774704d8020f769c88a4b249 | ≥ 471af006a747f1c535c8a8c6c0973c320fe01b22, < 14cc13e433e1067557435b1adbf05608d7d47a93 | ≥ 471af006a747f1c535c8a8c6c0973c320fe01b22, < a4d01fb87ece45d4164fd725890211ccf9a307a9 | ≥ 471af006a747f1c535c8a8c6c0973c320fe01b22, < 08245672cdc6505550d1a5020603b0a8d4a6dcc7 | 3512462036dbe44d88e93e75ee8a993781183ddb | ≥ 5.4.22, < 5.4.231 | ≥ 5.5.6, < 5.6 | 5.6
- linux_kernel≥ 5.4.22, < 5.4.231 | ≥ 5.5.6, < 5.10.166 | ≥ 5.11, < 5.15.91 | ≥ 5.16, < 6.1.9 | 6.2:rc1
Debian1 product
- linux< 6.1.11-1
3 vendors · 112 products
