CVE-2023-1194: Use-after-free in parse_lease_state()
Vulnerability summary
CVE-2023-1194 is a high (CVSS 8.1) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 65% of scored vulnerabilities.
Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 03-11-2023PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
Description
An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
CVSS metrics
5 scores · 4 sources · 2 versions- CVE.orgCNA7.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
1.08%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.08% 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 cause- CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu93 products
- linux< 5.15.0-102.112
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1057.63
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.37-1 | < 6.3.11-1
Fedoraproject1 product
- fedoraEOL37
Linux1 product
- linux_kernel≥ 5.15, < 5.15.145 | ≥ 5.16, < 6.1.34 | ≥ 6.2, < 6.3.8 | 6.4:rc1 | 6.4:rc2 | 6.4:rc3 | 6.4:rc4 | 6.4:rc5
4 vendors · 96 products
References
10 links- security.netapp.com/advisory/ntap-20231221-0006/Third Party Advisory
