UBUNTU-CVE-2025-21796

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21796 nfsd: clear acl_access/acl_default after releasing them

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21796

CVE-2025-21796 is a Linux kernel use-after-free vulnerability in nfsd where acl_access/acl_default could retain a pointer to a released posix_acl, enabling a UAF scenario. The fix is to clear acl_access/acl_default after releasing them to prevent the use-after-free. Public advisories (e.g., ALAS2...

CVE-2025-21796

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21795

CVE-2025-21795 affects the Linux kernel NFSD component. The vulnerability causes nfsd4_shutdown_callback to hang when nfs4_client is in courtesy state, because cl_cb_inflight remains non-zero and TCP may take ~15 minutes to drop the connection. The provided connected documents indicate a fix in n...

CVE-2025-21795 NFSD: fix hang in nfsd4_shutdown_callback

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21795

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21795 NFSD: fix hang in nfsd4_shutdown_callback

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2022-49362

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsdfileput nfsdfileputnoref can free @nf, so don't dereference @nf immediately upon return from nfsdfileputnoref...

CVE-2022-49280

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvcdecodewriteargs Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvcdecodewriteargs warn: no lower bound on 'args-len' Change the type to unsigned to prevent this issue...

DEBIAN-CVE-2022-49280

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvcdecodewriteargs Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvcdecodewriteargs warn: no lower bound on 'args-len' Change the type to unsigned to prevent this issue...

UBUNTU-CVE-2022-49279

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent integer overflow on 32 bit systems On a 32 bit system, the "len sizeofp" operation can have an integer overflow...

CVE-2022-49362 NFSD: Fix potential use-after-free in nfsd_file_put()

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsdfileput nfsdfileputnoref can free @nf, so don't dereference @nf immediately upon return from nfsdfileputnoref...

CVE-2022-49362

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsdfileput nfsdfileputnoref can free @nf, so don't dereference @nf immediately upon return from nfsdfileputnoref...

CVE-2022-49279 NFSD: prevent integer overflow on 32 bit systems

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent integer overflow on 32 bit systems On a 32 bit system, the "len sizeofp" operation can have an integer overflow...

CVE-2022-49280 NFSD: prevent underflow in nfssvc_decode_writeargs()

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvcdecodewriteargs Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvcdecodewriteargs warn: no lower bound on 'args-len' Change the type to unsigned to prevent this issue...

CVE-2022-49279

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent integer overflow on 32 bit systems On a 32 bit system, the "len sizeofp" operation can have an integer overflow...

CVE-2022-49279

CVE-2022-49279 targets the Linux kernel NFSD on 32-bit systems, where the operation len * sizeof(*p) can overflow, potentially causing kernel instability (A high impact/DoS) with local attack capability. Public advisories (Astra Linux, Tencent Linux, etc.) discuss the 32‑bit overflow and show tha...

CVE-2022-49280 NFSD: prevent underflow in nfssvc_decode_writeargs()

In the Linux kernel, the following vulnerability has been resolved: NFSD: prevent underflow in nfssvcdecodewriteargs Smatch complains: fs/nfsd/nfsxdr.c:341 nfssvcdecodewriteargs warn: no lower bound on 'args-len' Change the type to unsigned to prevent this issue...

CVE-2022-49280

Summary of CVE-2022-49280 (Linux kernel) : Affected component is NFSD in the Linux kernel, specifically nfssvc_decode_writeargs(). The root cause was an underflow risk from treating a length as signed, allowing an issue where args->len had no lower bound. The fix implemented across sources is ...