CWE-476BaseStable
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
Open in catalog with CWE filter →Related CAPECs
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Related vulnerabilities
CVE-2022-36648The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier, allows remote attackers to crash the host qemu and potentially execute code on the host via execute a malformed program in the guest OS. Note: This has been disputed by multiple third parties as not a valid vulnerability due to the rocker device not falling within the virtualization use case.
CVE-2026-46195In the Linux kernel, the following vulnerability has been resolved:
smb: client: validate dacloffset before building DACL pointers
parse_sec_desc(), build_sec_desc(), and the chown path in
id_mode_to_cifs_acl() all add the server-supplied dacloffset to pntsd
before proving a DACL header fits inside the returned security
descriptor.
On 32-bit builds a malicious server can return dacloffset near
U32_MAX, wrap the derived DACL pointer below end_of_acl, and then slip
past the later pointer-based bounds checks. build_sec_desc() and
id_mode_to_cifs_acl() can then dereference DACL fields from the wrapped
pointer in the chmod/chown rewrite paths.
Validate dacloffset numerically before building any DACL pointer and
reuse the same helper at the three DACL entry points.
CVE-2026-31657In the Linux kernel, the following vulnerability has been resolved:
batman-adv: hold claim backbone gateways by reference
batadv_bla_add_claim() can replace claim->backbone_gw and drop the old
gateway's last reference while readers still follow the pointer.
The netlink claim dump path dereferences claim->backbone_gw->orig and
takes claim->backbone_gw->crc_lock without pinning the underlying
backbone gateway. batadv_bla_check_claim() still has the same naked
pointer access pattern.
Reuse batadv_bla_claim_get_backbone_gw() in both readers so they operate
on a stable gateway reference until the read-side work is complete.
This keeps the dump and claim-check paths aligned with the lifetime
rules introduced for the other BLA claim readers.
CVE-2026-31436In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
At the end of this function, d is the traversal cursor of flist, but the
code completes found instead. This can lead to issues such as NULL pointer
dereferences, double completion, or descriptor leaks.
Fix this by completing d instead of found in the final
list_for_each_entry_safe() loop.
CVE-2024-55193OpenImageIO v3.1.0.0dev was discovered to contain a segmentation violation via the component /OpenImageIO/string_view.h.
CVE-2024-40493Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attackers to cause a denial of service and potentially execute arbitrary code via a specially crafted CoAP packet that causes `coap_msg_get_payload(resp)` to return a null pointer, which is then dereferenced in a call to `memcpy`.
CVE-2023-48697Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. An attacker can cause remote code execution due to memory buffer and pointer vulnerabilities in Azure RTOS USBX. The affected components include functions/processes in pictbridge and host class, related to PIMA, storage, CDC ACM, ECM, audio, hub in RTOS v6.2.1 and below. The fixes have been included in USBX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVE-2023-47003An issue in RedisGraph v.2.12.10 allows an attacker to execute arbitrary code and cause a denial of service via a crafted string in DataBlock_ItemIsDeleted.
CVE-2023-46427An issue was discovered in gpac version 2.3-DEV-rev588-g7edc40fee-master, allows remote attackers to execute arbitrary code, cause a denial of service (DoS), and obtain sensitive information via null pointer deference in gf_dash_setup_period component in media_tools/dash_client.c.
CVE-2023-31129The Contiki-NG operating system versions 4.8 and prior can be triggered to dereference a NULL pointer in the message handling code for IPv6 router solicitiations. Contiki-NG contains an implementation of IPv6 Neighbor Discovery (ND) in the module `os/net/ipv6/uip-nd6.c`. The ND protocol includes a message type called Router Solicitation (RS), which is used to locate routers and update their address information via the SLLAO (Source Link-Layer Address Option). If the indicated source address changes, a given neighbor entry is set to the STALE state.
The message handler does not check for RS messages with an SLLAO that indicates a link-layer address change that a neighbor entry can actually be created for the indicated address. The resulting pointer is used without a check, leading to the dereference of a NULL pointer of type `uip_ds6_nbr_t`.
The problem has been patched in the `develop` branch of Contiki-NG, and will be included in the upcoming 4.9 release. As a workaround, users can apply Contiki-NG pull request #2271 to patch the problem directly.
CVE-2023-2840NULL Pointer Dereference in GitHub repository gpac/gpac prior to 2.2.2.
CVE-2023-23087An issue was found in MojoJson v1.2.3 allows attackers to execute arbitary code via the destroy function.
CVE-2022-30592liblsquic/lsquic_qenc_hdl.c in LiteSpeed QUIC (aka LSQUIC) before 3.1.0 mishandles MAX_TABLE_CAPACITY.
CVE-2022-27567Null pointer dereference vulnerability in parser_hvcC function of libsimba library prior to SMR Apr-2022 Release 1 allows out of bounds write by remote attackers.
CVE-2022-26097Null pointer dereference vulnerability in parser_unknown_property function in libsimba library prior to SMR Apr-2022 Release 1 allows out of bounds write by remote attacker.