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CWE-476

5,434 CVEs • Abstraction: Base • Likelihood of Exploit: Medium

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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CVEs (5,434)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
4Canonical
F5Linux+1 more
27Big Ip Access Policy Manager
Big Ip Advanced Firewall ManagerBig Ip Analytics+24 more
May 6, 2026
Mar 11, 2014
N/A· v4
N/A· v3
7.8 HIGH· v2
The sctp_sf_do_5_1D_ce function in net/sctp/sm_statefuns.c in the Linux kernel through 3.13.6 does not validate certain auth_enable and auth_capable fields before making an sctp_sf_authenticate call, which allows remote...Show more
The sctp_sf_do_5_1D_ce function in net/sctp/sm_statefuns.c in the Linux kernel through 3.13.6 does not validate certain auth_enable and auth_capable fields before making an sctp_sf_authenticate call, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an SCTP handshake with a modified INIT chunk and a crafted AUTH chunk before a COOKIE_ECHO chunk.Show less
13s Software
1Codesys Runtime Toolkit
Apr 29, 2026
Jan 31, 2014
N/A· v4
N/A· v3
5.0 MEDIUM· v2
Smart Software Solutions (3S) CoDeSys Runtime Toolkit before 2.4.7.44 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via unspecified vectors.
1Libpng
1Libpng
Apr 29, 2026
Jan 12, 2014
N/A· v4
6.5 MEDIUM· v3
5.0 MEDIUM· v2
The png_do_expand_palette function in libpng before 1.6.8 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via (1) a PLTE chunk of zero bytes or (2) a NULL palette, re...Show more
The png_do_expand_palette function in libpng before 1.6.8 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via (1) a PLTE chunk of zero bytes or (2) a NULL palette, related to pngrtran.c and pngset.c.Show less
2Redhat
Xen
4Enterprise Linux Desktop
Enterprise Linux ServerEnterprise Linux Workstation+1 more
Apr 29, 2026
Dec 27, 2013
N/A· v4
N/A· v3
5.5 MEDIUM· v2
Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.
3Debian
MitOpensuse
3Debian Linux
Kerberos 5Opensuse
Apr 29, 2026
Nov 18, 2013
N/A· v4
N/A· v3
4.3 MEDIUM· v2
The setup_server_realm function in main.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.7, when multiple realms are configured, allows remote attackers to cause a denial of service (NULL p...Show more
The setup_server_realm function in main.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.7, when multiple realms are configured, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request.Show less
2Opensuse
Trustwave
2Modsecurity
Opensuse
Apr 29, 2026
Jul 15, 2013
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NULL pointer dereference, process crash, and disk consumption) via a POST request with a large body and...Show more
The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NULL pointer dereference, process crash, and disk consumption) via a POST request with a large body and a crafted Content-Type header.Show less
2Canonical
Linux
2Linux Kernel
Ubuntu Linux
Apr 29, 2026
Jul 8, 2013
N/A· v4
N/A· v3
7.8 HIGH· v2
net/ceph/auth_none.c in the Linux kernel through 3.10 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an auth_reply message t...Show more
net/ceph/auth_none.c in the Linux kernel through 3.10 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an auth_reply message that triggers an attempted build_request operation.Show less
1Linux
1Linux Kernel
Apr 29, 2026
Jun 8, 2013
N/A· v4
7.5 HIGH· v3
7.8 HIGH· v2
A certain Red Hat patch to the sctp_sock_migrate function in net/sctp/socket.c in the Linux kernel before 2.6.21, as used in Red Hat Enterprise Linux (RHEL) 5, allows remote attackers to cause a denial of service (NULL p...Show more
A certain Red Hat patch to the sctp_sock_migrate function in net/sctp/socket.c in the Linux kernel before 2.6.21, as used in Red Hat Enterprise Linux (RHEL) 5, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) via a crafted SCTP packet.Show less
4Fedoraproject
MitOpensuse+1 more
8Enterprise Linux Desktop
Enterprise Linux EusEnterprise Linux Server+5 more
Apr 29, 2026
Apr 19, 2013
N/A· v4
N/A· v3
4.0 MEDIUM· v2
The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticate...Show more
The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.Show less
2Mit
Opensuse
2Kerberos 5
Opensuse
Apr 29, 2026
Mar 5, 2013
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 d...Show more
The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 does not properly handle errors during extraction of fields from an X.509 certificate, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed KRB5_PADATA_PK_AS_REQ AS-REQ request.Show less
1Mit
1Kerberos 5
Apr 29, 2026
Mar 5, 2013
N/A· v4
N/A· v3
5.0 MEDIUM· v2
The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF...Show more
The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request.Show less
1Gimp
1Gimp
Apr 29, 2026
Jul 12, 2012
N/A· v4
N/A· v3
4.3 MEDIUM· v2
fits-io.c in GIMP before 2.8.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a malformed XTENSION header of a .fit file, as demonstrated using a long string.
4Adobe
OpensuseRedhat+1 more
9Air
Enterprise Linux DesktopEnterprise Linux Eus+6 more
Apr 29, 2026
Jun 9, 2012
N/A· v4
N/A· v3
9.3 HIGH· v2
Adobe Flash Player before 10.3.183.20 and 11.x before 11.3.300.257 on Windows and Mac OS X; before 10.3.183.20 and 11.x before 11.2.202.236 on Linux; before 11.1.111.10 on Android 2.x and 3.x; and before 11.1.115.9 on An...Show more
Adobe Flash Player before 10.3.183.20 and 11.x before 11.3.300.257 on Windows and Mac OS X; before 10.3.183.20 and 11.x before 11.2.202.236 on Linux; before 11.1.111.10 on Android 2.x and 3.x; and before 11.1.115.9 on Android 4.x, and Adobe AIR before 3.3.0.3610, allows attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference) via unspecified vectors.Show less
1Linux
1Linux Kernel
Apr 29, 2026
May 24, 2012
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_...Show more
crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.Show less
3Fedoraproject
LinuxSuse
5Fedora
Linux Enterprise DesktopLinux Enterprise High Availability Extension+2 more
Apr 29, 2026
May 17, 2012
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
The mem_cgroup_usage_unregister_event function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a deni...Show more
The mem_cgroup_usage_unregister_event function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by registering memory threshold events.Show less
3Linux
RedhatSuse
6Enterprise Linux
Enterprise MrgLinux Enterprise Desktop+3 more
Apr 29, 2026
May 17, 2012
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
The regset (aka register set) feature in the Linux kernel before 3.2.10 does not properly handle the absence of .get and .set methods, which allows local users to cause a denial of service (NULL pointer dereference) or p...Show more
The regset (aka register set) feature in the Linux kernel before 3.2.10 does not properly handle the absence of .get and .set methods, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a (1) PTRACE_GETREGSET or (2) PTRACE_SETREGSET ptrace call.Show less
1Linux
1Linux Kernel
Apr 29, 2026
May 17, 2012
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
The __sys_sendmsg function in net/socket.c in the Linux kernel before 3.1 allows local users to cause a denial of service (system crash) via crafted use of the sendmmsg system call, leading to an incorrect pointer derefe...Show more
The __sys_sendmsg function in net/socket.c in the Linux kernel before 3.1 allows local users to cause a denial of service (system crash) via crafted use of the sendmmsg system call, leading to an incorrect pointer dereference.Show less
2Linux
Redhat
2Enterprise Linux
Linux Kernel
Apr 29, 2026
May 17, 2012
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
The m_stop function in fs/proc/task_mmu.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (OOPS) via vectors that trigger an m_start error.
2Linux
Redhat
2Enterprise Linux
Linux Kernel
Apr 29, 2026
Feb 2, 2012
N/A· v4
7.8 HIGH· v3
7.2 HIGH· v2
The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause...Show more
The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.Show less
1Linux
1Linux Kernel
Apr 29, 2026
Oct 23, 2011
N/A· v4
N/A· v3
5.7 MEDIUM· v2
The napi_reuse_skb function in net/core/dev.c in the Generic Receive Offload (GRO) implementation in the Linux kernel before 2.6.38 does not reset the values of certain structure members, which might allow remote attacke...Show more
The napi_reuse_skb function in net/core/dev.c in the Generic Receive Offload (GRO) implementation in the Linux kernel before 2.6.38 does not reset the values of certain structure members, which might allow remote attackers to cause a denial of service (NULL pointer dereference) via a malformed VLAN frame.Show less