CVE-2025-38191— ksmbd: fix null pointer dereference in destroy_previous_session
Affected 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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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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Same Patch Batch · Linux · 2025-07-04 · 59 CVEs total
| CVE-2025-38216 | iommu/vt-d: Restore context entry setup order for aliased devices | |
| CVE-2025-38229 | media: cxusb: no longer judge rbuf when the write fails | |
| CVE-2025-38231 | nfsd: Initialize ssc before laundromat_work to prevent NULL dereference | |
| CVE-2025-38230 | jfs: validate AG parameters in dbMount() to prevent crashes | |
| CVE-2025-38228 | media: imagination: fix a potential memory leak in e5010_probe() | |
| CVE-2025-38233 | powerpc64/ftrace: fix clobbered r15 during livepatching | |
| CVE-2025-38221 | ext4: fix out of bounds punch offset | |
| CVE-2025-38219 | f2fs: prevent kernel warning due to negative i_nlink from corrupted image | |
| CVE-2025-38218 | f2fs: fix to do sanity check on sit_bitmap_size | |
| CVE-2025-38217 | hwmon: (ftsteutates) Fix TOCTOU race in fts_read() | |
| CVE-2025-38220 | ext4: only dirty folios when data journaling regular files | |
| CVE-2025-38215 | fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var | |
| CVE-2025-38214 | fbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var | |
| CVE-2025-38212 | ipc: fix to protect IPCS lookups using RCU | |
| CVE-2025-38211 | RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction | |
| CVE-2025-38210 | configfs-tsm-report: Fix NULL dereference of tsm_ops | |
| CVE-2025-38209 | nvme-tcp: remove tag set when second admin queue config fails | |
| CVE-2025-38208 | smb: client: add NULL check in automount_fullpath | |
| CVE-2025-38207 | mm: fix uprobe pte be overwritten when expanding vma | |
| CVE-2025-38206 | exfat: fix double free in delayed_free |
Showing top 20 of 59 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
V. Comments for CVE-2025-38191
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