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CVE-2023-23916

curl: HTTP multi-header compression denial of service

An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.

CVSS 3.1 · 6.5 Medium EPSS 1.7% KEV · Not listed
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Debian Linux Fedora Curl and 16 more
CVE-2023-4921

Use-after-free in Linux kernel's net/sched: sch_qfq component

A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue(). We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2023-4623

Use-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component

A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2023-3611

Out-of-bounds write in Linux kernel's net/sched: sch_qfq component

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2023-3609

Use-after-free in Linux kernel's net/sched: cls_u32 component

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2023-1095

kernel: netfilter: NULL pointer dereference in nf_tables due to zeroed list head

In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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CVE-2023-0286

X.400 address type confusion in X.509 GeneralName

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.

CVSS 3.1 · 7.4 High EPSS 68.4% KEV · Not listed
CVE-2022-43680

expat: use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

CVSS 3.1 · 7.5 High EPSS 3.2% KEV · Not listed
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CVE-2022-42898

krb5: integer overflow vulnerabilities in PAC parsing

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

CVSS 3.1 · 8.8 High EPSS 6.9% KEV · Not listed
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CVE-2022-42896

Info Leak in l2cap_core in the Linux Kernel

There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit  https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

CVSS 3.1 · 8 High EPSS 2.5% KEV · Not listed
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CVE-2022-32250

kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

CVSS 3.1 · 7.8 High EPSS 2.9% KEV · Not listed
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CVE-2022-32206

curl: HTTP compression denial of service

curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.

CVSS 3.1 · 6.5 Medium EPSS 36.3% KEV · Not listed
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Debian Linux Fedora Curl and 32 more
CVE-2022-21166

hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS 3.1 · 5.5 Medium EPSS 6.5% KEV · Not listed
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CVE-2022-21125

hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS 3.1 · 5.5 Medium EPSS 6.5% KEV · Not listed
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CVE-2022-21123

hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS 3.1 · 5.5 Medium EPSS 6.9% KEV · Not listed
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CVE-2022-3564

Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free

A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211087.

CVSS 3.1 · 5.5 Medium EPSS 1.5% KEV · Not listed
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Debian Linux Netapp and 1 more
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CVE-2022-3545

Linux Kernel IPsec nfp_cppcore.c area_cache_get use after free

A vulnerability has been found in Linux Kernel and classified as critical. Affected by this vulnerability is the function area_cache_get of the file drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c of the component IPsec. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier VDB-211045 was assigned to this vulnerability.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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Debian Linux Netapp and 1 more
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CVE-2022-2588

kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.

CVSS 3.1 · 5.3 Medium EPSS 5.9% KEV · Not listed
CVE-2021-27219

glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3. The function g_bytes_new has an integer overflow on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. The overflow could potentially lead to memory corruption.

CVSS 3.1 · 7.5 High EPSS 3.1% KEV · Not listed
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CVE-2021-20305

nettle: Out of bounds memory access in signature verification

A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS 3.1 · 8.1 High EPSS 1.7% KEV · Not listed
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