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CVSS: -EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it. • https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f •

CVSS: -EPSS: %CPEs: 4EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access ... • https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc •

CVSS: -EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure num_subauth != 0 before sub_auth is accessed. • https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3cc •

CVSS: -EPSS: %CPEs: 4EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete. • https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad •

CVSS: -EPSS: %CPEs: 5EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: exec: fix the racy usage of fs_struct->in_exec check_unsafe_exec() sets fs->in_exec under cred_guard_mutex, then execve() paths clear fs->in_exec lockless. This is fine if exec succeeds, but if it fails we have the following race: T1 sets fs->in_exec = 1, fails, drops cred_guard_mutex T2 sets fs->in_exec = 1 T1 clears fs->in_exec T2 continues with fs->in_exec == 0 Change fs/exec.c to clear fs->in_exec with cred_guard_mutex held. • https://git.kernel.org/stable/c/753a620a7f8e134b444f89fe90873234e894e21a •

CVSS: -EPSS: %CPEs: 6EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: media: streamzap: fix race between device disconnection and urb callback Syzkaller has reported a general protection fault at function ir_raw_event_store_with_filter(). This crash is caused by a NULL pointer dereference of dev->raw pointer, even though it is checked for NULL in the same function, which means there is a race condition. It occurs due to the incorrect order of actions in the streamzap_disconnect() function: rc_unregister_devic... • https://git.kernel.org/stable/c/8e9e60640067858e8036d4d43bbf725c60613359 •

CVSS: -EPSS: %CPEs: 2EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: nfsd: don't ignore the return code of svc_proc_register() Currently, nfsd_proc_stat_init() ignores the return value of svc_proc_register(). If the procfile creation fails, then the kernel will WARN when it tries to remove the entry later. Fix nfsd_proc_stat_init() to return the same type of pointer as svc_proc_register(), and fix up nfsd_net_init() to check that and fail the nfsd_net construction if it occurs. svc_proc_register() can fail i... • https://git.kernel.org/stable/c/9d9456185fd5f1891c74354ee297f19538141ead •

CVSS: -EPSS: %CPEs: 8EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: nfsd: put dl_stid if fail to queue dl_recall Before calling nfsd4_run_cb to queue dl_recall to the callback_wq, we increment the reference count of dl_stid. We expect that after the corresponding work_struct is processed, the reference count of dl_stid will be decremented through the callback function nfsd4_cb_recall_release. However, if the call to nfsd4_run_cb fails, the incremented reference count of dl_stid will not be decremented corre... • https://git.kernel.org/stable/c/b874cdef4e67e5150e07eff0eae1cbb21fb92da1 •

CVSS: -EPSS: %CPEs: 2EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: jfs: add check read-only before txBeginAnon() call Added a read-only check before calling `txBeginAnon` in `extAlloc` and `extRecord`. This prevents modification attempts on a read-only mounted filesystem, avoiding potential errors or crashes. Call trace: txBeginAnon+0xac/0x154 extAlloc+0xe8/0xdec fs/jfs/jfs_extent.c:78 jfs_get_block+0x340/0xb98 fs/jfs/inode.c:248 __block_write_begin_int+0x580/0x166c fs/buffer.c:2128 __block_write_begin fs/... • https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 •

CVSS: -EPSS: %CPEs: 2EXPL: 0

16 Apr 2025 — In the Linux kernel, the following vulnerability has been resolved: jfs: add check read-only before truncation in jfs_truncate_nolock() Added a check for "read-only" mode in the `jfs_truncate_nolock` function to avoid errors related to writing to a read-only filesystem. Call stack: block_write_begin() { jfs_write_failed() { jfs_truncate() { jfs_truncate_nolock() { txEnd() { ... log = JFS_SBI(tblk->sb)->log; // (log == NULL) If the `isReadOnly(ip)` condition is triggered in `jfs_truncate_nolock`, the functio... • https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 •