CVE-2025-38191— ksmbd: fix null pointer dereference in destroy_previous_session
Possible ATT&CK Techniques 2AI
T1211 · Exploitation for Stealth T1059 · Command and Scripting InterpreterAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0626e6641f6b467447c81dd7678a69c66f7746cf< 281afc52e2961cd5dd8326ebc9c5bc40904c0468 | affected |
0626e6641f6b467447c81dd7678a69c66f7746cf< 0902625a24eea7fdc187faa5d97df244d159dd6e | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< 1193486dffb7432a09f57f5d09049b4d4123538b | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< 076f1adefb9837977af7ed233883842ddc446644 | affected | ||
0626e6641f6b467447c81dd7678a69c66f7746cf< 7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e | affected | ||
5.15 | affected | ||
< 5.15 | unaffected | ||
6.1.142≤ 6.1.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2025-38191
Vulnerability Information
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Vulnerability Title
ksmbd: fix null pointer dereference in destroy_previous_session
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in destroy_previous_session If client set ->PreviousSessionId on kerberos session setup stage, NULL pointer dereference error will happen. Since sess->user is not set yet, It can pass the user argument as NULL to destroy_previous_session. sess->user will be set in ksmbd_krb5_authenticate(). So this patch move calling destroy_previous_session() after ksmbd_krb5_authenticate().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用，可能导致系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-38191
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Linux · 2025-07-04 · 59 CVEs total
| CVE-2025-38209 | 9.8 CRITICAL | nvme-tcp: remove tag set when second admin queue config fails |
| CVE-2025-38211 | 9.8 CRITICAL | RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction |
| CVE-2025-38174 | 8.8 HIGH | thunderbolt: Do not double dequeue a configuration request |
| CVE-2025-38216 | 8.8 HIGH | iommu/vt-d: Restore context entry setup order for aliased devices |
| CVE-2025-38233 | 7.8 HIGH | powerpc64/ftrace: fix clobbered r15 during livepatching |
| CVE-2025-38230 | 7.8 HIGH | jfs: validate AG parameters in dbMount() to prevent crashes |
| CVE-2025-38227 | 7.8 HIGH | media: vidtv: Terminating the subsequent process of initialization failure |
| CVE-2025-38226 | 7.8 HIGH | media: vivid: Change the siize of the composing |
| CVE-2025-38224 | 7.8 HIGH | can: kvaser_pciefd: refine error prone echo_skb_max handling logic |
| CVE-2025-38218 | 7.8 HIGH | f2fs: fix to do sanity check on sit_bitmap_size |
| CVE-2025-38232 | 7.8 HIGH | NFSD: fix race between nfsd registration and exports_proc |
| CVE-2025-38212 | 7.8 HIGH | ipc: fix to protect IPCS lookups using RCU |
| CVE-2025-38175 | 7.8 HIGH | binder: fix yet another UAF in binder_devices |
| CVE-2025-38234 | 7.8 HIGH | sched/rt: Fix race in push_rt_task |
| CVE-2025-38206 | 7.8 HIGH | exfat: fix double free in delayed_free |
| CVE-2025-38204 | 7.8 HIGH | jfs: fix array-index-out-of-bounds read in add_missing_indices |
| CVE-2025-38192 | 7.8 HIGH | net: clear the dst when changing skb protocol |
| CVE-2025-38193 | 7.8 HIGH | net_sched: sch_sfq: reject invalid perturb period |
| CVE-2025-38180 | 7.8 HIGH | net: atm: fix /proc/net/atm/lec handling |
| CVE-2025-38184 | 7.8 HIGH | tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer |
Showing top 20 of 59 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68454
KVM: s390: pci: Fix handling of AIF enable without AISB - CVE-2026-68453
s390/zcrypt: Fix buffer over-read in cca_cipher2protkey - CVE-2026-68452
s390/zcrypt: Validate length for CCA AES cipher key requests - CVE-2026-68451
s390/zcrypt: Validate length for CCA ECC private key request - CVE-2026-68450
btrfs: free mapping node on duplicate reloc root insert
Same vendor: Linux
- CVE-2026-68454
KVM: s390: pci: Fix handling of AIF enable without AISB - CVE-2026-68453
s390/zcrypt: Fix buffer over-read in cca_cipher2protkey - CVE-2026-68452
s390/zcrypt: Validate length for CCA AES cipher key requests - CVE-2026-68451
s390/zcrypt: Validate length for CCA ECC private key request - CVE-2026-68450
btrfs: free mapping node on duplicate reloc root insert
V. Comments for CVE-2025-38191
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