CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35863 – smb: client: fix potential UAF in is_valid_oplock_break()
https://notcve.org/view.php?id=CVE-2024-35863
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in is_valid_oplock_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corrige UAF potencial en is_valid_oplock_break() Omita las sesiones que se están eliminando (estado == SES_EXITING) para evitar UAF. A use-after-free flaw was found in the Linux kernel in smb is_valid_oplock_break() when exiting a session. This flaw allows a local attacker to crash the system. • https://git.kernel.org/stable/c/494c91e1e9413b407d12166a61b84200d4d54fac https://git.kernel.org/stable/c/0a15ba88a32fa7a516aff7ffd27befed5334dff2 https://git.kernel.org/stable/c/16d58c6a7db5050b9638669084b63fc05f951825 https://git.kernel.org/stable/c/69ccf040acddf33a3a85ec0f6b45ef84b0f7ec29 https://access.redhat.com/security/cve/CVE-2024-35863 https://bugzilla.redhat.com/show_bug.cgi?id=2281773 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35862 – smb: client: fix potential UAF in smb2_is_network_name_deleted()
https://notcve.org/view.php?id=CVE-2024-35862
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2_is_network_name_deleted() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: client: corrige UAF potencial en smb2_is_network_name_deleted() Omita las sesiones que se están eliminando (estado == SES_EXITING) para evitar UAF. A use-after-free flaw was found in the Linux kernel in smb smb2_is_network_name_deleted() when exiting a session. This flaw allows a local attacker to crash the system. • https://git.kernel.org/stable/c/f9414004798d9742c1af23a1d839fe6a9503751c https://git.kernel.org/stable/c/aa582b33f94453fdeaff1e7d0aa252c505975e01 https://git.kernel.org/stable/c/d919b6ea15ffa56fbafef4a1d92f47aeda9af645 https://git.kernel.org/stable/c/63981561ffd2d4987807df4126f96a11e18b0c1d https://access.redhat.com/security/cve/CVE-2024-35862 https://bugzilla.redhat.com/show_bug.cgi?id=2281781 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35861 – smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect()
https://notcve.org/view.php?id=CVE-2024-35861
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corrige UAF potencial en cifs_signal_cifsd_for_reconnect() Omita las sesiones que se están eliminando (estado == SES_EXITING) para evitar UAF. • https://git.kernel.org/stable/c/7e8360ac8774e19b0b25f44fff84a105bb2417e4 https://git.kernel.org/stable/c/2cfff21732132e363b4cc275d63ea98f1af726c1 https://git.kernel.org/stable/c/f9a96a7ad1e8d25dc6662bc7552e0752de74a20d https://git.kernel.org/stable/c/e0e50401cc3921c9eaf1b0e667db174519ea939f https://access.redhat.com/security/cve/CVE-2024-35861 https://bugzilla.redhat.com/show_bug.cgi?id=2281786 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-35860 – bpf: support deferring bpf_link dealloc to after RCU grace period
https://notcve.org/view.php?id=CVE-2024-35860
In the Linux kernel, the following vulnerability has been resolved: bpf: support deferring bpf_link dealloc to after RCU grace period BPF link for some program types is passed as a "context" which can be used by those BPF programs to look up additional information. E.g., for multi-kprobes and multi-uprobes, link is used to fetch BPF cookie values. Because of this runtime dependency, when bpf_link refcnt drops to zero there could still be active BPF programs running accessing link data. This patch adds generic support to defer bpf_link dealloc callback to after RCU GP, if requested. This is done by exposing two different deallocation callbacks, one synchronous and one deferred. If deferred one is provided, bpf_link_free() will schedule dealloc_deferred() callback to happen after RCU GP. BPF is using two flavors of RCU: "classic" non-sleepable one and RCU tasks trace one. The latter is used when sleepable BPF programs are used. bpf_link_free() accommodates that by checking underlying BPF program's sleepable flag, and goes either through normal RCU GP only for non-sleepable, or through RCU tasks trace GP *and* then normal RCU GP (taking into account rcu_trace_implies_rcu_gp() optimization), if BPF program is sleepable. We use this for multi-kprobe and multi-uprobe links, which dereference link during program run. • https://git.kernel.org/stable/c/0dcac272540613d41c05e89679e4ddb978b612f1 https://git.kernel.org/stable/c/876941f533e7b47fc69977fc4551c02f2d18af97 https://git.kernel.org/stable/c/5d8d447777564b35f67000e7838e7ccb64d525c8 https://git.kernel.org/stable/c/1a80dbcb2dbaf6e4c216e62e30fa7d3daa8001ce •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2024-35857 – icmp: prevent possible NULL dereferences from icmp_build_probe()
https://notcve.org/view.php?id=CVE-2024-35857
In the Linux kernel, the following vulnerability has been resolved: icmp: prevent possible NULL dereferences from icmp_build_probe() First problem is a double call to __in_dev_get_rcu(), because the second one could return NULL. if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list) Second problem is a read from dev->ip6_ptr with no NULL check: if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list)) Use the correct RCU API to fix these. v2: add missing include <net/addrconf.h> En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: icmp: evita posibles desreferencias a NULL por parte de icmp_build_probe(). El primer problema es una doble llamada a __in_dev_get_rcu(), porque la segunda podría devolver NULL. if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list) El segundo problema es una lectura de dev->ip6_ptr sin verificación NULL: if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list)) Use el correcto API de RCU para solucionarlos. v2: agregar falta incluir • https://git.kernel.org/stable/c/d329ea5bd8845f0b196bf41b18b6173340d6e0e4 https://git.kernel.org/stable/c/23b7ee4a8d559bf38eac7ce5bb2f6ebf76f9c401 https://git.kernel.org/stable/c/599c9ad5e1d43f5c12d869f5fd406ba5d8c55270 https://git.kernel.org/stable/c/d68dc711d84fdcf698e5d45308c3ddeede586350 https://git.kernel.org/stable/c/3e2979bf080c40da4f7c93aff8575ab8bc62b767 https://git.kernel.org/stable/c/c58e88d49097bd12dfcfef4f075b43f5d5830941 https://access.redhat.com/security/cve/CVE-2024-35857 https://bugzilla.redhat.com/show_bug.cgi?id=2281247 • CWE-476: NULL Pointer Dereference •